266778025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{3851}}^1$

素因数の和:4041

約数の個数: 24

約数和(自身を含む): 352504224

約数和(自身を除く): 85726199

約数列:

[1, 5, 17, 25, 85, 163, 425, 815, 2771, 3851, 4075, 13855, 19255, 65467, 69275, 96275, 327335, 627713, 1636675, 3138565, 10671121, 15692825, 53355605, 266778025]

約数ペア:

[(1, 266778025), (5, 53355605), (17, 15692825), (25, 10671121), (85, 3138565), (163, 1636675), (425, 627713), (815, 327335), (2771, 96275), (3851, 69275), (4075, 65467), (13855, 19255)]