12915940

素因数分解:

$2^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{977}}^1$

素因数の和:1647

約数の個数: 24

約数和(自身を含む): 27192312

約数和(自身を除く): 14276372

約数列:

[1, 2, 4, 5, 10, 20, 661, 977, 1322, 1954, 2644, 3305, 3908, 4885, 6610, 9770, 13220, 19540, 645797, 1291594, 2583188, 3228985, 6457970, 12915940]

約数ペア:

[(1, 12915940), (2, 6457970), (4, 3228985), (5, 2583188), (10, 1291594), (20, 645797), (661, 19540), (977, 13220), (1322, 9770), (1954, 6610), (2644, 4885), (3305, 3908)]