217004005

素因数分解:

$5^1\times {\mathrm{103}}^1\times {\mathrm{211}}^1\times {\mathrm{1997}}^1$

素因数の和:2316

約数の個数: 16

約数和(自身を含む): 264311424

約数和(自身を除く): 47307419

約数列:

[1, 5, 103, 211, 515, 1055, 1997, 9985, 21733, 108665, 205691, 421367, 1028455, 2106835, 43400801, 217004005]

約数ペア:

[(1, 217004005), (5, 43400801), (103, 2106835), (211, 1028455), (515, 421367), (1055, 205691), (1997, 108665), (9985, 21733)]