18787257

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{607}}^1$

素因数の和:813

約数の個数: 24

約数和(自身を含む): 28770560

約数和(自身を除く): 9983303

約数列:

[1, 3, 9, 19, 57, 171, 181, 543, 607, 1629, 1821, 3439, 5463, 10317, 11533, 30951, 34599, 103797, 109867, 329601, 988803, 2087473, 6262419, 18787257]

約数ペア:

[(1, 18787257), (3, 6262419), (9, 2087473), (19, 988803), (57, 329601), (171, 109867), (181, 103797), (543, 34599), (607, 30951), (1629, 11533), (1821, 10317), (3439, 5463)]