20042217

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{13177}}^1$

素因数の和:13209

約数の個数: 18

約数和(自身を含む): 31350462

約数和(自身を除く): 11308245

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 13177, 39531, 118593, 171301, 513903, 1541709, 2226913, 6680739, 20042217]

約数ペア:

[(1, 20042217), (3, 6680739), (9, 2226913), (13, 1541709), (39, 513903), (117, 171301), (169, 118593), (507, 39531), (1521, 13177)]