21377889

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2053}}^1$

素因数の和:2161

約数の個数: 24

約数和(自身を含む): 33644520

約数和(自身を除く): 12266631

約数列:

[1, 3, 9, 13, 39, 89, 117, 267, 801, 1157, 2053, 3471, 6159, 10413, 18477, 26689, 80067, 182717, 240201, 548151, 1644453, 2375321, 7125963, 21377889]

約数ペア:

[(1, 21377889), (3, 7125963), (9, 2375321), (13, 1644453), (39, 548151), (89, 240201), (117, 182717), (267, 80067), (801, 26689), (1157, 18477), (2053, 10413), (3471, 6159)]