21249891

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{4657}}^1$

素因数の和:4692

約数の個数: 24

約数和(自身を含む): 34096560

約数和(自身を除く): 12846669

約数列:

[1, 3, 9, 13, 27, 39, 117, 169, 351, 507, 1521, 4563, 4657, 13971, 41913, 60541, 125739, 181623, 544869, 787033, 1634607, 2361099, 7083297, 21249891]

約数ペア:

[(1, 21249891), (3, 7083297), (9, 2361099), (13, 1634607), (27, 787033), (39, 544869), (117, 181623), (169, 125739), (351, 60541), (507, 41913), (1521, 13971), (4563, 4657)]