21861213

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{773}}^1\times {\mathrm{857}}^1$

素因数の和:1644

約数の個数: 16

約数和(自身を含む): 31876416

約数和(自身を除く): 10015203

約数列:

[1, 3, 11, 33, 773, 857, 2319, 2571, 8503, 9427, 25509, 28281, 662461, 1987383, 7287071, 21861213]

約数ペア:

[(1, 21861213), (3, 7287071), (11, 1987383), (33, 662461), (773, 28281), (857, 25509), (2319, 9427), (2571, 8503)]