139260280

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{5381}}^1$

素因数の和:6039

約数の個数: 32

約数和(自身を含む): 313878240

約数和(自身を除く): 174617960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1294, 2588, 3235, 5176, 5381, 6470, 10762, 12940, 21524, 25880, 26905, 43048, 53810, 107620, 215240, 3481507, 6963014, 13926028, 17407535, 27852056, 34815070, 69630140, 139260280]

約数ペア:

[(1, 139260280), (2, 69630140), (4, 34815070), (5, 27852056), (8, 17407535), (10, 13926028), (20, 6963014), (40, 3481507), (647, 215240), (1294, 107620), (2588, 53810), (3235, 43048), (5176, 26905), (5381, 25880), (6470, 21524), (10762, 12940)]