12390640

素因数分解:

$2^4\times 5^1\times {\mathrm{154883}}^1$

素因数の和:154896

約数の個数: 20

約数和(自身を含む): 28808424

約数和(自身を除く): 16417784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 154883, 309766, 619532, 774415, 1239064, 1548830, 2478128, 3097660, 6195320, 12390640]

約数ペア:

[(1, 12390640), (2, 6195320), (4, 3097660), (5, 2478128), (8, 1548830), (10, 1239064), (16, 774415), (20, 619532), (40, 309766), (80, 154883)]