21587040

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:306

約数の個数: 192

約数和(自身を含む): 79833600

約数和(自身を除く): 58246560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 32, 36, 38, 40, 45, 48, 54, 57, 60, 72, 76, 80, 90, 95, 96, 108, 114, 120, 135, 144, 152, 160, 171, 180, 190, 216, 228, 240, 263, 270, 285, 288, 304, 342, 360, 380, 432, 456, 480, 513, 526, 540, 570, 608, 684, 720, 760, 789, 855, 864, 912, 1026, 1052, 1080, 1140, 1315, 1368, 1440, 1520, 1578, 1710, 1824, 2052, 2104, 2160, 2280, 2367, 2565, 2630, 2736, 3040, 3156, 3420, 3945, 4104, 4208, 4320, 4560, 4734, 4997, 5130, 5260, 5472, 6312, 6840, 7101, 7890, 8208, 8416, 9120, 9468, 9994, 10260, 10520, 11835, 12624, 13680, 14202, 14991, 15780, 16416, 18936, 19988, 20520, 21040, 23670, 24985, 25248, 27360, 28404, 29982, 31560, 35505, 37872, 39976, 41040, 42080, 44973, 47340, 49970, 56808, 59964, 63120, 71010, 74955, 75744, 79952, 82080, 89946, 94680, 99940, 113616, 119928, 126240, 134919, 142020, 149910, 159904, 179892, 189360, 199880, 224865, 227232, 239856, 269838, 284040, 299820, 359784, 378720, 399760, 449730, 479712, 539676, 568080, 599640, 674595, 719568, 799520, 899460, 1079352, 1136160, 1199280, 1349190, 1439136, 1798920, 2158704, 2398560, 2698380, 3597840, 4317408, 5396760, 7195680, 10793520, 21587040]

約数ペア:

[(1, 21587040), (2, 10793520), (3, 7195680), (4, 5396760), (5, 4317408), (6, 3597840), (8, 2698380), (9, 2398560), (10, 2158704), (12, 1798920), (15, 1439136), (16, 1349190), (18, 1199280), (19, 1136160), (20, 1079352), (24, 899460), (27, 799520), (30, 719568), (32, 674595), (36, 599640), (38, 568080), (40, 539676), (45, 479712), (48, 449730), (54, 399760), (57, 378720), (60, 359784), (72, 299820), (76, 284040), (80, 269838), (90, 239856), (95, 227232), (96, 224865), (108, 199880), (114, 189360), (120, 179892), (135, 159904), (144, 149910), (152, 142020), (160, 134919), (171, 126240), (180, 119928), (190, 113616), (216, 99940), (228, 94680), (240, 89946), (263, 82080), (270, 79952), (285, 75744), (288, 74955), (304, 71010), (342, 63120), (360, 59964), (380, 56808), (432, 49970), (456, 47340), (480, 44973), (513, 42080), (526, 41040), (540, 39976), (570, 37872), (608, 35505), (684, 31560), (720, 29982), (760, 28404), (789, 27360), (855, 25248), (864, 24985), (912, 23670), (1026, 21040), (1052, 20520), (1080, 19988), (1140, 18936), (1315, 16416), (1368, 15780), (1440, 14991), (1520, 14202), (1578, 13680), (1710, 12624), (1824, 11835), (2052, 10520), (2104, 10260), (2160, 9994), (2280, 9468), (2367, 9120), (2565, 8416), (2630, 8208), (2736, 7890), (3040, 7101), (3156, 6840), (3420, 6312), (3945, 5472), (4104, 5260), (4208, 5130), (4320, 4997), (4560, 4734)]