20690163

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{223}}^1$

素因数の和:316

約数の個数: 36

約数和(自身を含む): 33039552

約数和(自身を除く): 12349389

約数列:

[1, 3, 9, 13, 39, 61, 117, 169, 183, 223, 507, 549, 669, 793, 1521, 2007, 2379, 2899, 7137, 8697, 10309, 13603, 26091, 30927, 37687, 40809, 92781, 113061, 122427, 176839, 339183, 530517, 1591551, 2298907, 6896721, 20690163]

約数ペア:

[(1, 20690163), (3, 6896721), (9, 2298907), (13, 1591551), (39, 530517), (61, 339183), (117, 176839), (169, 122427), (183, 113061), (223, 92781), (507, 40809), (549, 37687), (669, 30927), (793, 26091), (1521, 13603), (2007, 10309), (2379, 8697), (2899, 7137)]