81657025

素因数分解:

$5^2\times {\mathrm{97}}^1\times {\mathrm{151}}^1\times {\mathrm{223}}^1$

素因数の和:481

約数の個数: 24

約数和(自身を含む): 103437824

約数和(自身を除く): 21780799

約数列:

[1, 5, 25, 97, 151, 223, 485, 755, 1115, 2425, 3775, 5575, 14647, 21631, 33673, 73235, 108155, 168365, 366175, 540775, 841825, 3266281, 16331405, 81657025]

約数ペア:

[(1, 81657025), (5, 16331405), (25, 3266281), (97, 841825), (151, 540775), (223, 366175), (485, 168365), (755, 108155), (1115, 73235), (2425, 33673), (3775, 21631), (5575, 14647)]