21934521

素因数分解:

$3^2\times 7^1\times {\mathrm{421}}^1\times {\mathrm{827}}^1$

素因数の和:1261

約数の個数: 24

約数和(自身を含む): 36339264

約数和(自身を除く): 14404743

約数列:

[1, 3, 7, 9, 21, 63, 421, 827, 1263, 2481, 2947, 3789, 5789, 7443, 8841, 17367, 26523, 52101, 348167, 1044501, 2437169, 3133503, 7311507, 21934521]

約数ペア:

[(1, 21934521), (3, 7311507), (7, 3133503), (9, 2437169), (21, 1044501), (63, 348167), (421, 52101), (827, 26523), (1263, 17367), (2481, 8841), (2947, 7443), (3789, 5789)]