64640368

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{310771}}^1$

素因数の和:310792

約数の個数: 20

約数和(自身を含む): 134875048

約数和(自身を除く): 70234680

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 310771, 621542, 1243084, 2486168, 4040023, 4972336, 8080046, 16160092, 32320184, 64640368]

約数ペア:

[(1, 64640368), (2, 32320184), (4, 16160092), (8, 8080046), (13, 4972336), (16, 4040023), (26, 2486168), (52, 1243084), (104, 621542), (208, 310771)]