261421510

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{86851}}^1$

素因数の和:86908

約数の個数: 32

約数和(自身を含む): 550294272

約数和(自身を除く): 288872762

約数列:

[1, 2, 5, 7, 10, 14, 35, 43, 70, 86, 215, 301, 430, 602, 1505, 3010, 86851, 173702, 434255, 607957, 868510, 1215914, 3039785, 3734593, 6079570, 7469186, 18672965, 26142151, 37345930, 52284302, 130710755, 261421510]

約数ペア:

[(1, 261421510), (2, 130710755), (5, 52284302), (7, 37345930), (10, 26142151), (14, 18672965), (35, 7469186), (43, 6079570), (70, 3734593), (86, 3039785), (215, 1215914), (301, 868510), (430, 607957), (602, 434255), (1505, 173702), (3010, 86851)]