25211215

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1\times {\mathrm{523}}^1$

素因数の和:870

約数の個数: 16

約数和(自身を含む): 31389696

約数和(自身を除く): 6178481

約数列:

[1, 5, 31, 155, 311, 523, 1555, 2615, 9641, 16213, 48205, 81065, 162653, 813265, 5042243, 25211215]

約数ペア:

[(1, 25211215), (5, 5042243), (31, 813265), (155, 162653), (311, 81065), (523, 48205), (1555, 16213), (2615, 9641)]