21336791

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{1171}}^1$

素因数の和:1334

約数の個数: 16

約数和(自身を含む): 25877760

約数和(自身を除く): 4540969

約数列:

[1, 7, 19, 133, 137, 959, 1171, 2603, 8197, 18221, 22249, 155743, 160427, 1122989, 3048113, 21336791]

約数ペア:

[(1, 21336791), (7, 3048113), (19, 1122989), (133, 160427), (137, 155743), (959, 22249), (1171, 18221), (2603, 8197)]