157831280

素因数分解:

$2^4\times 5^1\times {\mathrm{1972891}}^1$

素因数の和:1972904

約数の個数: 20

約数和(自身を含む): 366957912

約数和(自身を除く): 209126632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1972891, 3945782, 7891564, 9864455, 15783128, 19728910, 31566256, 39457820, 78915640, 157831280]

約数ペア:

[(1, 157831280), (2, 78915640), (4, 39457820), (5, 31566256), (8, 19728910), (10, 15783128), (16, 9864455), (20, 7891564), (40, 3945782), (80, 1972891)]