21056987

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{2207}}^1$

素因数の和:2290

約数の個数: 16

約数和(自身を含む): 25436160

約数和(自身を除く): 4379173

約数列:

[1, 7, 29, 47, 203, 329, 1363, 2207, 9541, 15449, 64003, 103729, 448021, 726103, 3008141, 21056987]

約数ペア:

[(1, 21056987), (7, 3008141), (29, 726103), (47, 448021), (203, 103729), (329, 64003), (1363, 15449), (2207, 9541)]