21540185

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{997}}^1$

素因数の和:1180

約数の個数: 16

約数和(自身を含む): 26946000

約数和(自身を除く): 5405815

約数列:

[1, 5, 29, 145, 149, 745, 997, 4321, 4985, 21605, 28913, 144565, 148553, 742765, 4308037, 21540185]

約数ペア:

[(1, 21540185), (5, 4308037), (29, 742765), (145, 148553), (149, 144565), (745, 28913), (997, 21605), (4321, 4985)]