18705380

素因数分解:

$2^2\times 5^1\times {\mathrm{761}}^1\times {\mathrm{1229}}^1$

素因数の和:1999

約数の個数: 24

約数和(自身を含む): 39364920

約数和(自身を除く): 20659540

約数列:

[1, 2, 4, 5, 10, 20, 761, 1229, 1522, 2458, 3044, 3805, 4916, 6145, 7610, 12290, 15220, 24580, 935269, 1870538, 3741076, 4676345, 9352690, 18705380]

約数ペア:

[(1, 18705380), (2, 9352690), (4, 4676345), (5, 3741076), (10, 1870538), (20, 935269), (761, 24580), (1229, 15220), (1522, 12290), (2458, 7610), (3044, 6145), (3805, 4916)]