8405780

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2677}}^1$

素因数の和:2843

約数の個数: 24

約数和(自身を含む): 17771208

約数和(自身を除く): 9365428

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 2677, 3140, 5354, 10708, 13385, 26770, 53540, 420289, 840578, 1681156, 2101445, 4202890, 8405780]

約数ペア:

[(1, 8405780), (2, 4202890), (4, 2101445), (5, 1681156), (10, 840578), (20, 420289), (157, 53540), (314, 26770), (628, 13385), (785, 10708), (1570, 5354), (2677, 3140)]