19958841

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{7727}}^1$

素因数の和:7781

約数の個数: 24

約数和(自身を含む): 33755904

約数和(自身を除く): 13797063

約数列:

[1, 3, 7, 9, 21, 41, 63, 123, 287, 369, 861, 2583, 7727, 23181, 54089, 69543, 162267, 316807, 486801, 950421, 2217649, 2851263, 6652947, 19958841]

約数ペア:

[(1, 19958841), (3, 6652947), (7, 2851263), (9, 2217649), (21, 950421), (41, 486801), (63, 316807), (123, 162267), (287, 69543), (369, 54089), (861, 23181), (2583, 7727)]