19780730

素因数分解:

$2^1\times 5^1\times {\mathrm{1277}}^1\times {\mathrm{1549}}^1$

素因数の和:2833

約数の個数: 16

約数和(自身を含む): 35656200

約数和(自身を除く): 15875470

約数列:

[1, 2, 5, 10, 1277, 1549, 2554, 3098, 6385, 7745, 12770, 15490, 1978073, 3956146, 9890365, 19780730]

約数ペア:

[(1, 19780730), (2, 9890365), (5, 3956146), (10, 1978073), (1277, 15490), (1549, 12770), (2554, 7745), (3098, 6385)]