21396627

素因数分解:

$3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{1523}}^1$

素因数の和:1759

約数の個数: 24

約数和(自身を含む): 35503104

約数和(自身を除く): 14106477

約数列:

[1, 3, 7, 9, 21, 63, 223, 669, 1523, 1561, 2007, 4569, 4683, 10661, 13707, 14049, 31983, 95949, 339629, 1018887, 2377403, 3056661, 7132209, 21396627]

約数ペア:

[(1, 21396627), (3, 7132209), (7, 3056661), (9, 2377403), (21, 1018887), (63, 339629), (223, 95949), (669, 31983), (1523, 14049), (1561, 13707), (2007, 10661), (4569, 4683)]