31292840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{19081}}^1$

素因数の和:19133

約数の個数: 32

約数和(自身を含む): 72129960

約数和(自身を除く): 40837120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 19081, 38162, 76324, 95405, 152648, 190810, 381620, 763240, 782321, 1564642, 3129284, 3911605, 6258568, 7823210, 15646420, 31292840]

約数ペア:

[(1, 31292840), (2, 15646420), (4, 7823210), (5, 6258568), (8, 3911605), (10, 3129284), (20, 1564642), (40, 782321), (41, 763240), (82, 381620), (164, 190810), (205, 152648), (328, 95405), (410, 76324), (820, 38162), (1640, 19081)]