215367620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{15629}}^1$

素因数の和:15704

約数の個数: 48

約数和(自身を含む): 496283760

約数和(自身を除く): 280916140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 212, 260, 265, 530, 689, 1060, 1378, 2756, 3445, 6890, 13780, 15629, 31258, 62516, 78145, 156290, 203177, 312580, 406354, 812708, 828337, 1015885, 1656674, 2031770, 3313348, 4063540, 4141685, 8283370, 10768381, 16566740, 21536762, 43073524, 53841905, 107683810, 215367620]

約数ペア:

[(1, 215367620), (2, 107683810), (4, 53841905), (5, 43073524), (10, 21536762), (13, 16566740), (20, 10768381), (26, 8283370), (52, 4141685), (53, 4063540), (65, 3313348), (106, 2031770), (130, 1656674), (212, 1015885), (260, 828337), (265, 812708), (530, 406354), (689, 312580), (1060, 203177), (1378, 156290), (2756, 78145), (3445, 62516), (6890, 31258), (13780, 15629)]