12561717

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{1657}}^1$

素因数の和:1705

約数の個数: 24

約数和(自身を含む): 20214336

約数和(自身を除く): 7652619

約数列:

[1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 1657, 2527, 4971, 7581, 11599, 31483, 34797, 94449, 220381, 598177, 661143, 1794531, 4187239, 12561717]

約数ペア:

[(1, 12561717), (3, 4187239), (7, 1794531), (19, 661143), (21, 598177), (57, 220381), (133, 94449), (361, 34797), (399, 31483), (1083, 11599), (1657, 7581), (2527, 4971)]