7949980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20921}}^1$

素因数の和:20949

約数の個数: 24

約数和(自身を含む): 17574480

約数和(自身を除く): 9624500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 20921, 41842, 83684, 104605, 209210, 397499, 418420, 794998, 1589996, 1987495, 3974990, 7949980]

約数ペア:

[(1, 7949980), (2, 3974990), (4, 1987495), (5, 1589996), (10, 794998), (19, 418420), (20, 397499), (38, 209210), (76, 104605), (95, 83684), (190, 41842), (380, 20921)]