20971866

素因数分解:

$2^1\times 3^1\times {\mathrm{1381}}^1\times {\mathrm{2531}}^1$

素因数の和:3917

約数の個数: 16

約数和(自身を含む): 41990688

約数和(自身を除く): 21018822

約数列:

[1, 2, 3, 6, 1381, 2531, 2762, 4143, 5062, 7593, 8286, 15186, 3495311, 6990622, 10485933, 20971866]

約数ペア:

[(1, 20971866), (2, 10485933), (3, 6990622), (6, 3495311), (1381, 15186), (2531, 8286), (2762, 7593), (4143, 5062)]