18884980

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{9349}}^1$

素因数の和:9459

約数の個数: 24

約数和(自身を含む): 40055400

約数和(自身を除く): 21170420

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 9349, 18698, 37396, 46745, 93490, 186980, 944249, 1888498, 3776996, 4721245, 9442490, 18884980]

約数ペア:

[(1, 18884980), (2, 9442490), (4, 4721245), (5, 3776996), (10, 1888498), (20, 944249), (101, 186980), (202, 93490), (404, 46745), (505, 37396), (1010, 18698), (2020, 9349)]