77680025

素因数分解:

$5^2\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{311}}^1$

素因数の和:521

約数の個数: 24

約数和(自身を含む): 98577024

約数和(自身を除く): 20896999

約数列:

[1, 5, 25, 97, 103, 311, 485, 515, 1555, 2425, 2575, 7775, 9991, 30167, 32033, 49955, 150835, 160165, 249775, 754175, 800825, 3107201, 15536005, 77680025]

約数ペア:

[(1, 77680025), (5, 15536005), (25, 3107201), (97, 800825), (103, 754175), (311, 249775), (485, 160165), (515, 150835), (1555, 49955), (2425, 32033), (2575, 30167), (7775, 9991)]