21087913

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{5827}}^1$

素因数の和:5892

約数の個数: 16

約数和(自身を含む): 26855424

約数和(自身を除く): 5767511

約数列:

[1, 7, 11, 47, 77, 329, 517, 3619, 5827, 40789, 64097, 273869, 448679, 1917083, 3012559, 21087913]

約数ペア:

[(1, 21087913), (7, 3012559), (11, 1917083), (47, 448679), (77, 273869), (329, 64097), (517, 40789), (3619, 5827)]