400981320

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{19541}}^1$

素因数の和:19580

約数の個数: 128

約数和(自身を含む): 1407024000

約数和(自身を除く): 1006042680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 54, 57, 60, 72, 76, 90, 95, 108, 114, 120, 135, 152, 171, 180, 190, 216, 228, 270, 285, 342, 360, 380, 456, 513, 540, 570, 684, 760, 855, 1026, 1080, 1140, 1368, 1710, 2052, 2280, 2565, 3420, 4104, 5130, 6840, 10260, 19541, 20520, 39082, 58623, 78164, 97705, 117246, 156328, 175869, 195410, 234492, 293115, 351738, 371279, 390820, 468984, 527607, 586230, 703476, 742558, 781640, 879345, 1055214, 1113837, 1172460, 1406952, 1485116, 1758690, 1856395, 2110428, 2227674, 2344920, 2638035, 2970232, 3341511, 3517380, 3712790, 4220856, 4455348, 5276070, 5569185, 6683022, 7034760, 7425580, 8910696, 10024533, 10552140, 11138370, 13366044, 14851160, 16707555, 20049066, 21104280, 22276740, 26732088, 33415110, 40098132, 44553480, 50122665, 66830220, 80196264, 100245330, 133660440, 200490660, 400981320]

約数ペア:

[(1, 400981320), (2, 200490660), (3, 133660440), (4, 100245330), (5, 80196264), (6, 66830220), (8, 50122665), (9, 44553480), (10, 40098132), (12, 33415110), (15, 26732088), (18, 22276740), (19, 21104280), (20, 20049066), (24, 16707555), (27, 14851160), (30, 13366044), (36, 11138370), (38, 10552140), (40, 10024533), (45, 8910696), (54, 7425580), (57, 7034760), (60, 6683022), (72, 5569185), (76, 5276070), (90, 4455348), (95, 4220856), (108, 3712790), (114, 3517380), (120, 3341511), (135, 2970232), (152, 2638035), (171, 2344920), (180, 2227674), (190, 2110428), (216, 1856395), (228, 1758690), (270, 1485116), (285, 1406952), (342, 1172460), (360, 1113837), (380, 1055214), (456, 879345), (513, 781640), (540, 742558), (570, 703476), (684, 586230), (760, 527607), (855, 468984), (1026, 390820), (1080, 371279), (1140, 351738), (1368, 293115), (1710, 234492), (2052, 195410), (2280, 175869), (2565, 156328), (3420, 117246), (4104, 97705), (5130, 78164), (6840, 58623), (10260, 39082), (19541, 20520)]