21512727

素因数分解:

$3^2\times {\mathrm{79}}^2\times {\mathrm{383}}^1$

素因数の和:547

約数の個数: 18

約数和(自身を含む): 31554432

約数和(自身を除く): 10041705

約数列:

[1, 3, 9, 79, 237, 383, 711, 1149, 3447, 6241, 18723, 30257, 56169, 90771, 272313, 2390303, 7170909, 21512727]

約数ペア:

[(1, 21512727), (3, 7170909), (9, 2390303), (79, 272313), (237, 90771), (383, 56169), (711, 30257), (1149, 18723), (3447, 6241)]