21313750

素因数分解:

$2^1\times 5^4\times {\mathrm{17}}^2\times {\mathrm{59}}^1$

素因数の和:115

約数の個数: 60

約数和(自身を含む): 43158060

約数和(自身を除く): 21844310

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 59, 85, 118, 125, 170, 250, 289, 295, 425, 578, 590, 625, 850, 1003, 1250, 1445, 1475, 2006, 2125, 2890, 2950, 4250, 5015, 7225, 7375, 10030, 10625, 14450, 14750, 17051, 21250, 25075, 34102, 36125, 36875, 50150, 72250, 73750, 85255, 125375, 170510, 180625, 250750, 361250, 426275, 626875, 852550, 1253750, 2131375, 4262750, 10656875, 21313750]

約数ペア:

[(1, 21313750), (2, 10656875), (5, 4262750), (10, 2131375), (17, 1253750), (25, 852550), (34, 626875), (50, 426275), (59, 361250), (85, 250750), (118, 180625), (125, 170510), (170, 125375), (250, 85255), (289, 73750), (295, 72250), (425, 50150), (578, 36875), (590, 36125), (625, 34102), (850, 25075), (1003, 21250), (1250, 17051), (1445, 14750), (1475, 14450), (2006, 10625), (2125, 10030), (2890, 7375), (2950, 7225), (4250, 5015)]