31071280

素因数分解:

$2^4\times 5^1\times {\mathrm{388391}}^1$

素因数の和:388404

約数の個数: 20

約数和(自身を含む): 72240912

約数和(自身を除く): 41169632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 388391, 776782, 1553564, 1941955, 3107128, 3883910, 6214256, 7767820, 15535640, 31071280]

約数ペア:

[(1, 31071280), (2, 15535640), (4, 7767820), (5, 6214256), (8, 3883910), (10, 3107128), (16, 1941955), (20, 1553564), (40, 776782), (80, 388391)]