21049940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{36293}}^1$

素因数の和:36331

約数の個数: 24

約数和(自身を含む): 45730440

約数和(自身を除く): 24680500

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 36293, 72586, 145172, 181465, 362930, 725860, 1052497, 2104994, 4209988, 5262485, 10524970, 21049940]

約数ペア:

[(1, 21049940), (2, 10524970), (4, 5262485), (5, 4209988), (10, 2104994), (20, 1052497), (29, 725860), (58, 362930), (116, 181465), (145, 145172), (290, 72586), (580, 36293)]