19989765

素因数分解:

$3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{5623}}^1$

素因数の和:5713

約数の個数: 24

約数和(自身を含む): 35093760

約数和(自身を除く): 15103995

約数列:

[1, 3, 5, 9, 15, 45, 79, 237, 395, 711, 1185, 3555, 5623, 16869, 28115, 50607, 84345, 253035, 444217, 1332651, 2221085, 3997953, 6663255, 19989765]

約数ペア:

[(1, 19989765), (3, 6663255), (5, 3997953), (9, 2221085), (15, 1332651), (45, 444217), (79, 253035), (237, 84345), (395, 50607), (711, 28115), (1185, 16869), (3555, 5623)]