12457820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{457}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 27699840

約数和(自身を除く): 15242020

約数列:

[1, 2, 4, 5, 10, 20, 29, 47, 58, 94, 116, 145, 188, 235, 290, 457, 470, 580, 914, 940, 1363, 1828, 2285, 2726, 4570, 5452, 6815, 9140, 13253, 13630, 21479, 26506, 27260, 42958, 53012, 66265, 85916, 107395, 132530, 214790, 265060, 429580, 622891, 1245782, 2491564, 3114455, 6228910, 12457820]

約数ペア:

[(1, 12457820), (2, 6228910), (4, 3114455), (5, 2491564), (10, 1245782), (20, 622891), (29, 429580), (47, 265060), (58, 214790), (94, 132530), (116, 107395), (145, 85916), (188, 66265), (235, 53012), (290, 42958), (457, 27260), (470, 26506), (580, 21479), (914, 13630), (940, 13253), (1363, 9140), (1828, 6815), (2285, 5452), (2726, 4570)]