21576321

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{61471}}^1$

素因数の和:61493

約数の個数: 16

約数和(自身を含む): 34424320

約数和(自身を除く): 12847999

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 61471, 184413, 553239, 799123, 1659717, 2397369, 7192107, 21576321]

約数ペア:

[(1, 21576321), (3, 7192107), (9, 2397369), (13, 1659717), (27, 799123), (39, 553239), (117, 184413), (351, 61471)]