21120986

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{307}}^1\times {\mathrm{839}}^1$

素因数の和:1189

約数の個数: 16

約数和(自身を含む): 32598720

約数和(自身を除く): 11477734

約数列:

[1, 2, 41, 82, 307, 614, 839, 1678, 12587, 25174, 34399, 68798, 257573, 515146, 10560493, 21120986]

約数ペア:

[(1, 21120986), (2, 10560493), (41, 515146), (82, 257573), (307, 68798), (614, 34399), (839, 25174), (1678, 12587)]