12987340

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{4957}}^1$

素因数の和:5097

約数の個数: 24

約数和(自身を含む): 27487152

約数和(自身を除く): 14499812

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 4957, 9914, 19828, 24785, 49570, 99140, 649367, 1298734, 2597468, 3246835, 6493670, 12987340]

約数ペア:

[(1, 12987340), (2, 6493670), (4, 3246835), (5, 2597468), (10, 1298734), (20, 649367), (131, 99140), (262, 49570), (524, 24785), (655, 19828), (1310, 9914), (2620, 4957)]