21245841

素因数分解:

$3^3\times {\mathrm{59}}^1\times {\mathrm{13337}}^1$

素因数の和:13405

約数の個数: 16

約数和(自身を含む): 32011200

約数和(自身を除く): 10765359

約数列:

[1, 3, 9, 27, 59, 177, 531, 1593, 13337, 40011, 120033, 360099, 786883, 2360649, 7081947, 21245841]

約数ペア:

[(1, 21245841), (3, 7081947), (9, 2360649), (27, 786883), (59, 360099), (177, 120033), (531, 40011), (1593, 13337)]