20115830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:261

約数の個数: 64

約数和(自身を含む): 43642368

約数和(自身を除く): 23526538

約数列:

[1, 2, 5, 7, 10, 14, 35, 41, 43, 70, 82, 86, 163, 205, 215, 287, 301, 326, 410, 430, 574, 602, 815, 1141, 1435, 1505, 1630, 1763, 2282, 2870, 3010, 3526, 5705, 6683, 7009, 8815, 11410, 12341, 13366, 14018, 17630, 24682, 33415, 35045, 46781, 49063, 61705, 66830, 70090, 93562, 98126, 123410, 233905, 245315, 287369, 467810, 490630, 574738, 1436845, 2011583, 2873690, 4023166, 10057915, 20115830]

約数ペア:

[(1, 20115830), (2, 10057915), (5, 4023166), (7, 2873690), (10, 2011583), (14, 1436845), (35, 574738), (41, 490630), (43, 467810), (70, 287369), (82, 245315), (86, 233905), (163, 123410), (205, 98126), (215, 93562), (287, 70090), (301, 66830), (326, 61705), (410, 49063), (430, 46781), (574, 35045), (602, 33415), (815, 24682), (1141, 17630), (1435, 14018), (1505, 13366), (1630, 12341), (1763, 11410), (2282, 8815), (2870, 7009), (3010, 6683), (3526, 5705)]