20781906

素因数分解:

$2^1\times 3^1\times {\mathrm{271}}^1\times {\mathrm{12781}}^1$

素因数の和:13057

約数の個数: 16

約数和(自身を含む): 41720448

約数和(自身を除く): 20938542

約数列:

[1, 2, 3, 6, 271, 542, 813, 1626, 12781, 25562, 38343, 76686, 3463651, 6927302, 10390953, 20781906]

約数ペア:

[(1, 20781906), (2, 10390953), (3, 6927302), (6, 3463651), (271, 76686), (542, 38343), (813, 25562), (1626, 12781)]