664390

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^2\times {\mathrm{79}}^1$

素因数の和:144

約数の個数: 24

約数和(自身を含む): 1254240

約数和(自身を除く): 589850

約数列:

[1, 2, 5, 10, 29, 58, 79, 145, 158, 290, 395, 790, 841, 1682, 2291, 4205, 4582, 8410, 11455, 22910, 66439, 132878, 332195, 664390]

約数ペア:

[(1, 664390), (2, 332195), (5, 132878), (10, 66439), (29, 22910), (58, 11455), (79, 8410), (145, 4582), (158, 4205), (290, 2291), (395, 1682), (790, 841)]