81384260

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{86579}}^1$

素因数の和:86635

約数の個数: 24

約数和(自身を含む): 174545280

約数和(自身を除く): 93161020

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 86579, 173158, 346316, 432895, 865790, 1731580, 4069213, 8138426, 16276852, 20346065, 40692130, 81384260]

約数ペア:

[(1, 81384260), (2, 40692130), (4, 20346065), (5, 16276852), (10, 8138426), (20, 4069213), (47, 1731580), (94, 865790), (188, 432895), (235, 346316), (470, 173158), (940, 86579)]