68789260

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{21101}}^1$

素因数の和:21273

約数の個数: 24

約数和(自身を含む): 145350576

約数和(自身を除く): 76561316

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 21101, 42202, 84404, 105505, 211010, 422020, 3439463, 6878926, 13757852, 17197315, 34394630, 68789260]

約数ペア:

[(1, 68789260), (2, 34394630), (4, 17197315), (5, 13757852), (10, 6878926), (20, 3439463), (163, 422020), (326, 211010), (652, 105505), (815, 84404), (1630, 42202), (3260, 21101)]