20470681

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{233}}^1$

素因数の和:421

約数の個数: 24

約数和(自身を含む): 26249184

約数和(自身を除く): 5778503

約数列:

[1, 7, 11, 49, 77, 163, 233, 539, 1141, 1631, 1793, 2563, 7987, 11417, 12551, 17941, 37979, 87857, 125587, 265853, 417769, 1860971, 2924383, 20470681]

約数ペア:

[(1, 20470681), (7, 2924383), (11, 1860971), (49, 417769), (77, 265853), (163, 125587), (233, 87857), (539, 37979), (1141, 17941), (1631, 12551), (1793, 11417), (2563, 7987)]