20577650

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{563}}^1$

素因数の和:635

約数の個数: 48

約数和(自身を含む): 41541984

約数和(自身を除く): 20964334

約数列:

[1, 2, 5, 10, 17, 25, 34, 43, 50, 85, 86, 170, 215, 425, 430, 563, 731, 850, 1075, 1126, 1462, 2150, 2815, 3655, 5630, 7310, 9571, 14075, 18275, 19142, 24209, 28150, 36550, 47855, 48418, 95710, 121045, 239275, 242090, 411553, 478550, 605225, 823106, 1210450, 2057765, 4115530, 10288825, 20577650]

約数ペア:

[(1, 20577650), (2, 10288825), (5, 4115530), (10, 2057765), (17, 1210450), (25, 823106), (34, 605225), (43, 478550), (50, 411553), (85, 242090), (86, 239275), (170, 121045), (215, 95710), (425, 48418), (430, 47855), (563, 36550), (731, 28150), (850, 24209), (1075, 19142), (1126, 18275), (1462, 14075), (2150, 9571), (2815, 7310), (3655, 5630)]