81481210

素因数分解:

$2^1\times 5^1\times {\mathrm{379}}^1\times {\mathrm{21499}}^1$

素因数の和:21885

約数の個数: 16

約数和(自身を含む): 147060000

約数和(自身を除く): 65578790

約数列:

[1, 2, 5, 10, 379, 758, 1895, 3790, 21499, 42998, 107495, 214990, 8148121, 16296242, 40740605, 81481210]

約数ペア:

[(1, 81481210), (2, 40740605), (5, 16296242), (10, 8148121), (379, 214990), (758, 107495), (1895, 42998), (3790, 21499)]