25091980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{15881}}^1$

素因数の和:15969

約数の個数: 24

約数和(自身を含む): 53363520

約数和(自身を除く): 28271540

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 15881, 31762, 63524, 79405, 158810, 317620, 1254599, 2509198, 5018396, 6272995, 12545990, 25091980]

約数ペア:

[(1, 25091980), (2, 12545990), (4, 6272995), (5, 5018396), (10, 2509198), (20, 1254599), (79, 317620), (158, 158810), (316, 79405), (395, 63524), (790, 31762), (1580, 15881)]