21030220

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{359}}^1$

素因数の和:498

約数の個数: 48

約数和(自身を含む): 46267200

約数和(自身を除く): 25236980

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 101, 116, 145, 202, 290, 359, 404, 505, 580, 718, 1010, 1436, 1795, 2020, 2929, 3590, 5858, 7180, 10411, 11716, 14645, 20822, 29290, 36259, 41644, 52055, 58580, 72518, 104110, 145036, 181295, 208220, 362590, 725180, 1051511, 2103022, 4206044, 5257555, 10515110, 21030220]

約数ペア:

[(1, 21030220), (2, 10515110), (4, 5257555), (5, 4206044), (10, 2103022), (20, 1051511), (29, 725180), (58, 362590), (101, 208220), (116, 181295), (145, 145036), (202, 104110), (290, 72518), (359, 58580), (404, 52055), (505, 41644), (580, 36259), (718, 29290), (1010, 20822), (1436, 14645), (1795, 11716), (2020, 10411), (2929, 7180), (3590, 5858)]