20457256

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{359}}^1\times {\mathrm{419}}^1$

素因数の和:801

約数の個数: 32

約数和(自身を含む): 40824000

約数和(自身を除く): 20366744

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 359, 419, 718, 838, 1436, 1676, 2872, 3352, 6103, 7123, 12206, 14246, 24412, 28492, 48824, 56984, 150421, 300842, 601684, 1203368, 2557157, 5114314, 10228628, 20457256]

約数ペア:

[(1, 20457256), (2, 10228628), (4, 5114314), (8, 2557157), (17, 1203368), (34, 601684), (68, 300842), (136, 150421), (359, 56984), (419, 48824), (718, 28492), (838, 24412), (1436, 14246), (1676, 12206), (2872, 7123), (3352, 6103)]