21054445

素因数分解:

$5^1\times {\mathrm{59}}^1\times {\mathrm{149}}^1\times {\mathrm{479}}^1$

素因数の和:692

約数の個数: 16

約数和(自身を含む): 25920000

約数和(自身を除く): 4865555

約数列:

[1, 5, 59, 149, 295, 479, 745, 2395, 8791, 28261, 43955, 71371, 141305, 356855, 4210889, 21054445]

約数ペア:

[(1, 21054445), (5, 4210889), (59, 356855), (149, 141305), (295, 71371), (479, 43955), (745, 28261), (2395, 8791)]