18639220

素因数分解:

$2^2\times 5^1\times {\mathrm{379}}^1\times {\mathrm{2459}}^1$

素因数の和:2847

約数の個数: 24

約数和(自身を含む): 39261600

約数和(自身を除く): 20622380

約数列:

[1, 2, 4, 5, 10, 20, 379, 758, 1516, 1895, 2459, 3790, 4918, 7580, 9836, 12295, 24590, 49180, 931961, 1863922, 3727844, 4659805, 9319610, 18639220]

約数ペア:

[(1, 18639220), (2, 9319610), (4, 4659805), (5, 3727844), (10, 1863922), (20, 931961), (379, 49180), (758, 24590), (1516, 12295), (1895, 9836), (2459, 7580), (3790, 4918)]