20112561

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{2437}}^1$

素因数の和:2581

約数の個数: 24

約数和(自身を含む): 33468864

約数和(自身を除く): 13356303

約数列:

[1, 3, 7, 9, 21, 63, 131, 393, 917, 1179, 2437, 2751, 7311, 8253, 17059, 21933, 51177, 153531, 319247, 957741, 2234729, 2873223, 6704187, 20112561]

約数ペア:

[(1, 20112561), (3, 6704187), (7, 2873223), (9, 2234729), (21, 957741), (63, 319247), (131, 153531), (393, 51177), (917, 21933), (1179, 17059), (2437, 8253), (2751, 7311)]