18815990

素因数分解:

$2^1\times 5^1\times {\mathrm{1229}}^1\times {\mathrm{1531}}^1$

素因数の和:2767

約数の個数: 16

約数和(自身を含む): 33918480

約数和(自身を除く): 15102490

約数列:

[1, 2, 5, 10, 1229, 1531, 2458, 3062, 6145, 7655, 12290, 15310, 1881599, 3763198, 9407995, 18815990]

約数ペア:

[(1, 18815990), (2, 9407995), (5, 3763198), (10, 1881599), (1229, 15310), (1531, 12290), (2458, 7655), (3062, 6145)]