128921015

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{709}}^1\times {\mathrm{887}}^1$

素因数の和:1642

約数の個数: 16

約数和(自身を含む): 158880960

約数和(自身を除く): 29959945

約数列:

[1, 5, 41, 205, 709, 887, 3545, 4435, 29069, 36367, 145345, 181835, 628883, 3144415, 25784203, 128921015]

約数ペア:

[(1, 128921015), (5, 25784203), (41, 3144415), (205, 628883), (709, 181835), (887, 145345), (3545, 36367), (4435, 29069)]