31465780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{22159}}^1$

素因数の和:22239

約数の個数: 24

約数和(自身を含む): 67011840

約数和(自身を除く): 35546060

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 22159, 44318, 88636, 110795, 221590, 443180, 1573289, 3146578, 6293156, 7866445, 15732890, 31465780]

約数ペア:

[(1, 31465780), (2, 15732890), (4, 7866445), (5, 6293156), (10, 3146578), (20, 1573289), (71, 443180), (142, 221590), (284, 110795), (355, 88636), (710, 44318), (1420, 22159)]