20309520

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{157}}^1$

素因数の和:198

約数の個数: 240

約数和(自身を含む): 80405568

約数和(自身を除く): 60096048

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 16, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 48, 49, 55, 56, 60, 66, 70, 77, 80, 84, 88, 98, 105, 110, 112, 120, 132, 140, 147, 154, 157, 165, 168, 176, 196, 210, 220, 231, 240, 245, 264, 280, 294, 308, 314, 330, 336, 385, 392, 420, 440, 462, 471, 490, 528, 539, 560, 588, 616, 628, 660, 735, 770, 784, 785, 840, 880, 924, 942, 980, 1078, 1099, 1155, 1176, 1232, 1256, 1320, 1470, 1540, 1570, 1617, 1680, 1727, 1848, 1884, 1960, 2156, 2198, 2310, 2352, 2355, 2512, 2640, 2695, 2940, 3080, 3140, 3234, 3297, 3454, 3696, 3768, 3920, 4312, 4396, 4620, 4710, 5181, 5390, 5495, 5880, 6160, 6280, 6468, 6594, 6908, 7536, 7693, 8085, 8624, 8635, 8792, 9240, 9420, 10362, 10780, 10990, 11760, 12089, 12560, 12936, 13188, 13816, 15386, 16170, 16485, 17270, 17584, 18480, 18840, 20724, 21560, 21980, 23079, 24178, 25872, 25905, 26376, 27632, 30772, 32340, 32970, 34540, 36267, 37680, 38465, 41448, 43120, 43960, 46158, 48356, 51810, 52752, 60445, 61544, 64680, 65940, 69080, 72534, 76930, 82896, 84623, 87920, 92316, 96712, 103620, 115395, 120890, 123088, 129360, 131880, 138160, 145068, 153860, 169246, 181335, 184632, 193424, 207240, 230790, 241780, 253869, 263760, 290136, 307720, 338492, 362670, 369264, 414480, 423115, 461580, 483560, 507738, 580272, 615440, 676984, 725340, 846230, 923160, 967120, 1015476, 1269345, 1353968, 1450680, 1692460, 1846320, 2030952, 2538690, 2901360, 3384920, 4061904, 5077380, 6769840, 10154760, 20309520]

約数ペア:

[(1, 20309520), (2, 10154760), (3, 6769840), (4, 5077380), (5, 4061904), (6, 3384920), (7, 2901360), (8, 2538690), (10, 2030952), (11, 1846320), (12, 1692460), (14, 1450680), (15, 1353968), (16, 1269345), (20, 1015476), (21, 967120), (22, 923160), (24, 846230), (28, 725340), (30, 676984), (33, 615440), (35, 580272), (40, 507738), (42, 483560), (44, 461580), (48, 423115), (49, 414480), (55, 369264), (56, 362670), (60, 338492), (66, 307720), (70, 290136), (77, 263760), (80, 253869), (84, 241780), (88, 230790), (98, 207240), (105, 193424), (110, 184632), (112, 181335), (120, 169246), (132, 153860), (140, 145068), (147, 138160), (154, 131880), (157, 129360), (165, 123088), (168, 120890), (176, 115395), (196, 103620), (210, 96712), (220, 92316), (231, 87920), (240, 84623), (245, 82896), (264, 76930), (280, 72534), (294, 69080), (308, 65940), (314, 64680), (330, 61544), (336, 60445), (385, 52752), (392, 51810), (420, 48356), (440, 46158), (462, 43960), (471, 43120), (490, 41448), (528, 38465), (539, 37680), (560, 36267), (588, 34540), (616, 32970), (628, 32340), (660, 30772), (735, 27632), (770, 26376), (784, 25905), (785, 25872), (840, 24178), (880, 23079), (924, 21980), (942, 21560), (980, 20724), (1078, 18840), (1099, 18480), (1155, 17584), (1176, 17270), (1232, 16485), (1256, 16170), (1320, 15386), (1470, 13816), (1540, 13188), (1570, 12936), (1617, 12560), (1680, 12089), (1727, 11760), (1848, 10990), (1884, 10780), (1960, 10362), (2156, 9420), (2198, 9240), (2310, 8792), (2352, 8635), (2355, 8624), (2512, 8085), (2640, 7693), (2695, 7536), (2940, 6908), (3080, 6594), (3140, 6468), (3234, 6280), (3297, 6160), (3454, 5880), (3696, 5495), (3768, 5390), (3920, 5181), (4312, 4710), (4396, 4620)]