21156447

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{8893}}^1$

素因数の和:8970

約数の個数: 16

約数和(自身を含む): 30879968

約数和(自身を除く): 9723521

約数列:

[1, 3, 13, 39, 61, 183, 793, 2379, 8893, 26679, 115609, 346827, 542473, 1627419, 7052149, 21156447]

約数ペア:

[(1, 21156447), (3, 7052149), (13, 1627419), (39, 542473), (61, 346827), (183, 115609), (793, 26679), (2379, 8893)]