66566980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{42131}}^1$

素因数の和:42219

約数の個数: 24

約数和(自身を含む): 141563520

約数和(自身を除く): 74996540

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 42131, 84262, 168524, 210655, 421310, 842620, 3328349, 6656698, 13313396, 16641745, 33283490, 66566980]

約数ペア:

[(1, 66566980), (2, 33283490), (4, 16641745), (5, 13313396), (10, 6656698), (20, 3328349), (79, 842620), (158, 421310), (316, 210655), (395, 168524), (790, 84262), (1580, 42131)]