256421710

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{65581}}^1$

素因数の和:65628

約数の個数: 32

約数和(自身を含む): 509965632

約数和(自身を除く): 253543922

約数列:

[1, 2, 5, 10, 17, 23, 34, 46, 85, 115, 170, 230, 391, 782, 1955, 3910, 65581, 131162, 327905, 655810, 1114877, 1508363, 2229754, 3016726, 5574385, 7541815, 11148770, 15083630, 25642171, 51284342, 128210855, 256421710]

約数ペア:

[(1, 256421710), (2, 128210855), (5, 51284342), (10, 25642171), (17, 15083630), (23, 11148770), (34, 7541815), (46, 5574385), (85, 3016726), (115, 2229754), (170, 1508363), (230, 1114877), (391, 655810), (782, 327905), (1955, 131162), (3910, 65581)]