77128025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{5519}}^1$

素因数の和:5585

約数の個数: 24

約数和(自身を含む): 105409920

約数和(自身を除く): 28281895

約数列:

[1, 5, 13, 25, 43, 65, 215, 325, 559, 1075, 2795, 5519, 13975, 27595, 71747, 137975, 237317, 358735, 1186585, 1793675, 3085121, 5932925, 15425605, 77128025]

約数ペア:

[(1, 77128025), (5, 15425605), (13, 5932925), (25, 3085121), (43, 1793675), (65, 1186585), (215, 358735), (325, 237317), (559, 137975), (1075, 71747), (2795, 27595), (5519, 13975)]