21356180

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{36821}}^1$

素因数の和:36859

約数の個数: 24

約数和(自身を含む): 46395720

約数和(自身を除く): 25039540

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 36821, 73642, 147284, 184105, 368210, 736420, 1067809, 2135618, 4271236, 5339045, 10678090, 21356180]

約数ペア:

[(1, 21356180), (2, 10678090), (4, 5339045), (5, 4271236), (10, 2135618), (20, 1067809), (29, 736420), (58, 368210), (116, 184105), (145, 147284), (290, 73642), (580, 36821)]