19821784

素因数分解:

$2^3\times {\mathrm{263}}^1\times {\mathrm{9421}}^1$

素因数の和:9690

約数の個数: 16

約数和(自身を含む): 37311120

約数和(自身を除く): 17489336

約数列:

[1, 2, 4, 8, 263, 526, 1052, 2104, 9421, 18842, 37684, 75368, 2477723, 4955446, 9910892, 19821784]

約数ペア:

[(1, 19821784), (2, 9910892), (4, 4955446), (8, 2477723), (263, 75368), (526, 37684), (1052, 18842), (2104, 9421)]