40960025

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{449}}^1$

素因数の和:589

約数の個数: 24

約数和(自身を含む): 52731000

約数和(自身を除く): 11770975

約数列:

[1, 5, 25, 41, 89, 205, 445, 449, 1025, 2225, 2245, 3649, 11225, 18245, 18409, 39961, 91225, 92045, 199805, 460225, 999025, 1638401, 8192005, 40960025]

約数ペア:

[(1, 40960025), (5, 8192005), (25, 1638401), (41, 999025), (89, 460225), (205, 199805), (445, 92045), (449, 91225), (1025, 39961), (2225, 18409), (2245, 18245), (3649, 11225)]