78317020

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{15601}}^1$

素因数の和:15861

約数の個数: 24

約数和(自身を含む): 165131568

約数和(自身を除く): 86814548

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 5020, 15601, 31202, 62404, 78005, 156010, 312020, 3915851, 7831702, 15663404, 19579255, 39158510, 78317020]

約数ペア:

[(1, 78317020), (2, 39158510), (4, 19579255), (5, 15663404), (10, 7831702), (20, 3915851), (251, 312020), (502, 156010), (1004, 78005), (1255, 62404), (2510, 31202), (5020, 15601)]