406060

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:345

約数の個数: 24

約数和(自身を含む): 866880

約数和(自身を除く): 460820

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 257, 316, 395, 514, 790, 1028, 1285, 1580, 2570, 5140, 20303, 40606, 81212, 101515, 203030, 406060]

約数ペア:

[(1, 406060), (2, 203030), (4, 101515), (5, 81212), (10, 40606), (20, 20303), (79, 5140), (158, 2570), (257, 1580), (316, 1285), (395, 1028), (514, 790)]