1591280

素因数分解:

$2^4\times 5^1\times {\mathrm{19891}}^1$

素因数の和:19904

約数の個数: 20

約数和(自身を含む): 3699912

約数和(自身を除く): 2108632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 19891, 39782, 79564, 99455, 159128, 198910, 318256, 397820, 795640, 1591280]

約数ペア:

[(1, 1591280), (2, 795640), (4, 397820), (5, 318256), (8, 198910), (10, 159128), (16, 99455), (20, 79564), (40, 39782), (80, 19891)]