21466555

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{607}}^1\times {\mathrm{643}}^1$

素因数の和:1266

約数の個数: 16

約数和(自身を含む): 28191744

約数和(自身を除く): 6725189

約数列:

[1, 5, 11, 55, 607, 643, 3035, 3215, 6677, 7073, 33385, 35365, 390301, 1951505, 4293311, 21466555]

約数ペア:

[(1, 21466555), (5, 4293311), (11, 1951505), (55, 390301), (607, 35365), (643, 33385), (3035, 7073), (3215, 6677)]