256543240

素因数分解:

$2^3\times 5^1\times {\mathrm{773}}^1\times {\mathrm{8297}}^1$

素因数の和:9081

約数の個数: 32

約数和(自身を含む): 578038680

約数和(自身を除く): 321495440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 773, 1546, 3092, 3865, 6184, 7730, 8297, 15460, 16594, 30920, 33188, 41485, 66376, 82970, 165940, 331880, 6413581, 12827162, 25654324, 32067905, 51308648, 64135810, 128271620, 256543240]

約数ペア:

[(1, 256543240), (2, 128271620), (4, 64135810), (5, 51308648), (8, 32067905), (10, 25654324), (20, 12827162), (40, 6413581), (773, 331880), (1546, 165940), (3092, 82970), (3865, 66376), (6184, 41485), (7730, 33188), (8297, 30920), (15460, 16594)]