670256

素因数分解:

$2^4\times {\mathrm{163}}^1\times {\mathrm{257}}^1$

素因数の和:428

約数の個数: 20

約数和(自身を含む): 1311672

約数和(自身を除く): 641416

約数列:

[1, 2, 4, 8, 16, 163, 257, 326, 514, 652, 1028, 1304, 2056, 2608, 4112, 41891, 83782, 167564, 335128, 670256]

約数ペア:

[(1, 670256), (2, 335128), (4, 167564), (8, 83782), (16, 41891), (163, 4112), (257, 2608), (326, 2056), (514, 1304), (652, 1028)]