3974990

素因数分解:

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

素因数の和:20947

約数の個数: 16

約数和(自身を含む): 7531920

約数和(自身を除く): 3556930

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 20921, 41842, 104605, 209210, 397499, 794998, 1987495, 3974990]

約数ペア:

[(1, 3974990), (2, 1987495), (5, 794998), (10, 397499), (19, 209210), (38, 104605), (95, 41842), (190, 20921)]