21489273

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{61223}}^1$

素因数の和:61245

約数の個数: 16

約数和(自身を含む): 34285440

約数和(自身を除く): 12796167

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 61223, 183669, 551007, 795899, 1653021, 2387697, 7163091, 21489273]

約数ペア:

[(1, 21489273), (3, 7163091), (9, 2387697), (13, 1653021), (27, 795899), (39, 551007), (117, 183669), (351, 61223)]