78663740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1787}}^1$

素因数の和:1898

約数の個数: 48

約数和(自身を含む): 173021184

約数和(自身を除く): 94357444

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 71, 124, 142, 155, 284, 310, 355, 620, 710, 1420, 1787, 2201, 3574, 4402, 7148, 8804, 8935, 11005, 17870, 22010, 35740, 44020, 55397, 110794, 126877, 221588, 253754, 276985, 507508, 553970, 634385, 1107940, 1268770, 2537540, 3933187, 7866374, 15732748, 19665935, 39331870, 78663740]

約数ペア:

[(1, 78663740), (2, 39331870), (4, 19665935), (5, 15732748), (10, 7866374), (20, 3933187), (31, 2537540), (62, 1268770), (71, 1107940), (124, 634385), (142, 553970), (155, 507508), (284, 276985), (310, 253754), (355, 221588), (620, 126877), (710, 110794), (1420, 55397), (1787, 44020), (2201, 35740), (3574, 22010), (4402, 17870), (7148, 11005), (8804, 8935)]