21905520

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1$

素因数の和:112

約数の個数: 320

約数和(自身を含む): 89994240

約数和(自身を除く): 68088720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 17, 20, 21, 24, 26, 28, 30, 34, 35, 39, 40, 42, 48, 51, 52, 56, 59, 60, 65, 68, 70, 78, 80, 84, 85, 91, 102, 104, 105, 112, 118, 119, 120, 130, 136, 140, 156, 168, 170, 177, 182, 195, 204, 208, 210, 221, 236, 238, 240, 255, 260, 272, 273, 280, 295, 312, 336, 340, 354, 357, 364, 390, 408, 413, 420, 442, 455, 472, 476, 510, 520, 546, 560, 590, 595, 624, 663, 680, 708, 714, 728, 767, 780, 816, 826, 840, 884, 885, 910, 944, 952, 1003, 1020, 1040, 1092, 1105, 1180, 1190, 1239, 1326, 1360, 1365, 1416, 1428, 1456, 1534, 1547, 1560, 1652, 1680, 1768, 1770, 1785, 1820, 1904, 2006, 2040, 2065, 2184, 2210, 2301, 2360, 2380, 2478, 2652, 2730, 2832, 2856, 3009, 3068, 3094, 3120, 3304, 3315, 3536, 3540, 3570, 3640, 3835, 4012, 4080, 4130, 4368, 4420, 4602, 4641, 4720, 4760, 4956, 5015, 5304, 5369, 5460, 5712, 6018, 6136, 6188, 6195, 6608, 6630, 7021, 7080, 7140, 7280, 7670, 7735, 8024, 8260, 8840, 9204, 9282, 9520, 9912, 10030, 10608, 10738, 10920, 11505, 12036, 12272, 12376, 12390, 13039, 13260, 14042, 14160, 14280, 15045, 15340, 15470, 16048, 16107, 16520, 17680, 18408, 18564, 19824, 20060, 21063, 21476, 21840, 23010, 23205, 24072, 24752, 24780, 26078, 26520, 26845, 28084, 28560, 30090, 30680, 30940, 32214, 33040, 35105, 36816, 37128, 39117, 40120, 42126, 42952, 46020, 46410, 48144, 49560, 52156, 53040, 53690, 56168, 60180, 61360, 61880, 64428, 65195, 70210, 74256, 78234, 80240, 80535, 84252, 85904, 91273, 92040, 92820, 99120, 104312, 105315, 107380, 112336, 120360, 123760, 128856, 130390, 140420, 156468, 161070, 168504, 182546, 184080, 185640, 195585, 208624, 210630, 214760, 240720, 257712, 260780, 273819, 280840, 312936, 322140, 337008, 365092, 371280, 391170, 421260, 429520, 456365, 521560, 547638, 561680, 625872, 644280, 730184, 782340, 842520, 912730, 1043120, 1095276, 1288560, 1369095, 1460368, 1564680, 1685040, 1825460, 2190552, 2738190, 3129360, 3650920, 4381104, 5476380, 7301840, 10952760, 21905520]

約数ペア:

[(1, 21905520), (2, 10952760), (3, 7301840), (4, 5476380), (5, 4381104), (6, 3650920), (7, 3129360), (8, 2738190), (10, 2190552), (12, 1825460), (13, 1685040), (14, 1564680), (15, 1460368), (16, 1369095), (17, 1288560), (20, 1095276), (21, 1043120), (24, 912730), (26, 842520), (28, 782340), (30, 730184), (34, 644280), (35, 625872), (39, 561680), (40, 547638), (42, 521560), (48, 456365), (51, 429520), (52, 421260), (56, 391170), (59, 371280), (60, 365092), (65, 337008), (68, 322140), (70, 312936), (78, 280840), (80, 273819), (84, 260780), (85, 257712), (91, 240720), (102, 214760), (104, 210630), (105, 208624), (112, 195585), (118, 185640), (119, 184080), (120, 182546), (130, 168504), (136, 161070), (140, 156468), (156, 140420), (168, 130390), (170, 128856), (177, 123760), (182, 120360), (195, 112336), (204, 107380), (208, 105315), (210, 104312), (221, 99120), (236, 92820), (238, 92040), (240, 91273), (255, 85904), (260, 84252), (272, 80535), (273, 80240), (280, 78234), (295, 74256), (312, 70210), (336, 65195), (340, 64428), (354, 61880), (357, 61360), (364, 60180), (390, 56168), (408, 53690), (413, 53040), (420, 52156), (442, 49560), (455, 48144), (472, 46410), (476, 46020), (510, 42952), (520, 42126), (546, 40120), (560, 39117), (590, 37128), (595, 36816), (624, 35105), (663, 33040), (680, 32214), (708, 30940), (714, 30680), (728, 30090), (767, 28560), (780, 28084), (816, 26845), (826, 26520), (840, 26078), (884, 24780), (885, 24752), (910, 24072), (944, 23205), (952, 23010), (1003, 21840), (1020, 21476), (1040, 21063), (1092, 20060), (1105, 19824), (1180, 18564), (1190, 18408), (1239, 17680), (1326, 16520), (1360, 16107), (1365, 16048), (1416, 15470), (1428, 15340), (1456, 15045), (1534, 14280), (1547, 14160), (1560, 14042), (1652, 13260), (1680, 13039), (1768, 12390), (1770, 12376), (1785, 12272), (1820, 12036), (1904, 11505), (2006, 10920), (2040, 10738), (2065, 10608), (2184, 10030), (2210, 9912), (2301, 9520), (2360, 9282), (2380, 9204), (2478, 8840), (2652, 8260), (2730, 8024), (2832, 7735), (2856, 7670), (3009, 7280), (3068, 7140), (3094, 7080), (3120, 7021), (3304, 6630), (3315, 6608), (3536, 6195), (3540, 6188), (3570, 6136), (3640, 6018), (3835, 5712), (4012, 5460), (4080, 5369), (4130, 5304), (4368, 5015), (4420, 4956), (4602, 4760), (4641, 4720)]