21418137

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3001}}^1$

素因数の和:3081

約数の個数: 24

約数和(自身を含む): 33874568

約数和(自身を除く): 12456431

約数列:

[1, 3, 9, 13, 39, 61, 117, 183, 549, 793, 2379, 3001, 7137, 9003, 27009, 39013, 117039, 183061, 351117, 549183, 1647549, 2379793, 7139379, 21418137]

約数ペア:

[(1, 21418137), (3, 7139379), (9, 2379793), (13, 1647549), (39, 549183), (61, 351117), (117, 183061), (183, 117039), (549, 39013), (793, 27009), (2379, 9003), (3001, 7137)]