21872485

素因数分解:

$5^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1\times {\mathrm{599}}^1$

素因数の和:780

約数の個数: 16

約数和(自身を含む): 26928000

約数和(自身を除く): 5055515

約数列:

[1, 5, 67, 109, 335, 545, 599, 2995, 7303, 36515, 40133, 65291, 200665, 326455, 4374497, 21872485]

約数ペア:

[(1, 21872485), (5, 4374497), (67, 326455), (109, 200665), (335, 65291), (545, 40133), (599, 36515), (2995, 7303)]