31725640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{11171}}^1$

素因数の和:11253

約数の個数: 32

約数和(自身を含む): 72394560

約数和(自身を除く): 40668920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 11171, 22342, 44684, 55855, 89368, 111710, 223420, 446840, 793141, 1586282, 3172564, 3965705, 6345128, 7931410, 15862820, 31725640]

約数ペア:

[(1, 31725640), (2, 15862820), (4, 7931410), (5, 6345128), (8, 3965705), (10, 3172564), (20, 1586282), (40, 793141), (71, 446840), (142, 223420), (284, 111710), (355, 89368), (568, 55855), (710, 44684), (1420, 22342), (2840, 11171)]