81282620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131101}}^1$

素因数の和:131141

約数の個数: 24

約数和(自身を含む): 176201088

約数和(自身を除く): 94918468

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 131101, 262202, 524404, 655505, 1311010, 2622020, 4064131, 8128262, 16256524, 20320655, 40641310, 81282620]

約数ペア:

[(1, 81282620), (2, 40641310), (4, 20320655), (5, 16256524), (10, 8128262), (20, 4064131), (31, 2622020), (62, 1311010), (124, 655505), (155, 524404), (310, 262202), (620, 131101)]