21343641

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{4721}}^1$

素因数の和:4872

約数の個数: 16

約数和(自身を含む): 31278528

約数和(自身を除く): 9934887

約数列:

[1, 3, 11, 33, 137, 411, 1507, 4521, 4721, 14163, 51931, 155793, 646777, 1940331, 7114547, 21343641]

約数ペア:

[(1, 21343641), (3, 7114547), (11, 1940331), (33, 646777), (137, 155793), (411, 51931), (1507, 14163), (4521, 4721)]