64486580

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{29581}}^1$

素因数の和:29699

約数の個数: 24

約数和(自身を含む): 136668840

約数和(自身を除く): 72182260

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 29581, 59162, 118324, 147905, 295810, 591620, 3224329, 6448658, 12897316, 16121645, 32243290, 64486580]

約数ペア:

[(1, 64486580), (2, 32243290), (4, 16121645), (5, 12897316), (10, 6448658), (20, 3224329), (109, 591620), (218, 295810), (436, 147905), (545, 118324), (1090, 59162), (2180, 29581)]