21008970

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{701}}^1$

素因数の和:757

約数の個数: 80

約数和(自身を含む): 58100328

約数和(自身を除く): 37091358

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 37, 45, 54, 74, 81, 90, 111, 135, 162, 185, 222, 270, 333, 370, 405, 555, 666, 701, 810, 999, 1110, 1402, 1665, 1998, 2103, 2997, 3330, 3505, 4206, 4995, 5994, 6309, 7010, 9990, 10515, 12618, 14985, 18927, 21030, 25937, 29970, 31545, 37854, 51874, 56781, 63090, 77811, 94635, 113562, 129685, 155622, 189270, 233433, 259370, 283905, 389055, 466866, 567810, 700299, 778110, 1167165, 1400598, 2100897, 2334330, 3501495, 4201794, 7002990, 10504485, 21008970]

約数ペア:

[(1, 21008970), (2, 10504485), (3, 7002990), (5, 4201794), (6, 3501495), (9, 2334330), (10, 2100897), (15, 1400598), (18, 1167165), (27, 778110), (30, 700299), (37, 567810), (45, 466866), (54, 389055), (74, 283905), (81, 259370), (90, 233433), (111, 189270), (135, 155622), (162, 129685), (185, 113562), (222, 94635), (270, 77811), (333, 63090), (370, 56781), (405, 51874), (555, 37854), (666, 31545), (701, 29970), (810, 25937), (999, 21030), (1110, 18927), (1402, 14985), (1665, 12618), (1998, 10515), (2103, 9990), (2997, 7010), (3330, 6309), (3505, 5994), (4206, 4995)]