820290770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{35251}}^1$

素因数の和:35450

約数の個数: 32

約数和(自身を含む): 1599030720

約数和(自身を除く): 778739950

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 179, 358, 895, 1790, 2327, 4654, 11635, 23270, 35251, 70502, 176255, 352510, 458263, 916526, 2291315, 4582630, 6309929, 12619858, 31549645, 63099290, 82029077, 164058154, 410145385, 820290770]

約数ペア:

[(1, 820290770), (2, 410145385), (5, 164058154), (10, 82029077), (13, 63099290), (26, 31549645), (65, 12619858), (130, 6309929), (179, 4582630), (358, 2291315), (895, 916526), (1790, 458263), (2327, 352510), (4654, 176255), (11635, 70502), (23270, 35251)]