206980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:219

約数の個数: 24

約数和(自身を含む): 443520

約数和(自身を除く): 236540

約数列:

[1, 2, 4, 5, 10, 20, 79, 131, 158, 262, 316, 395, 524, 655, 790, 1310, 1580, 2620, 10349, 20698, 41396, 51745, 103490, 206980]

約数ペア:

[(1, 206980), (2, 103490), (4, 51745), (5, 41396), (10, 20698), (20, 10349), (79, 2620), (131, 1580), (158, 1310), (262, 790), (316, 655), (395, 524)]