20999406

素因数分解:

$2^1\times 3^1\times {\mathrm{1291}}^1\times {\mathrm{2711}}^1$

素因数の和:4007

約数の個数: 16

約数和(自身を含む): 42046848

約数和(自身を除く): 21047442

約数列:

[1, 2, 3, 6, 1291, 2582, 2711, 3873, 5422, 7746, 8133, 16266, 3499901, 6999802, 10499703, 20999406]

約数ペア:

[(1, 20999406), (2, 10499703), (3, 6999802), (6, 3499901), (1291, 16266), (2582, 8133), (2711, 7746), (3873, 5422)]