128617480

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{14419}}^1$

素因数の和:14653

約数の個数: 32

約数和(自身を含む): 290707200

約数和(自身を除く): 162089720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 4460, 8920, 14419, 28838, 57676, 72095, 115352, 144190, 288380, 576760, 3215437, 6430874, 12861748, 16077185, 25723496, 32154370, 64308740, 128617480]

約数ペア:

[(1, 128617480), (2, 64308740), (4, 32154370), (5, 25723496), (8, 16077185), (10, 12861748), (20, 6430874), (40, 3215437), (223, 576760), (446, 288380), (892, 144190), (1115, 115352), (1784, 72095), (2230, 57676), (4460, 28838), (8920, 14419)]