21375615

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{20071}}^1$

素因数の和:20150

約数の個数: 16

約数和(自身を含む): 34684416

約数和(自身を除く): 13308801

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 20071, 60213, 100355, 301065, 1425041, 4275123, 7125205, 21375615]

約数ペア:

[(1, 21375615), (3, 7125205), (5, 4275123), (15, 1425041), (71, 301065), (213, 100355), (355, 60213), (1065, 20071)]