21129735

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1621}}^1$

素因数の和:1719

約数の個数: 32

約数和(自身を含む): 37370880

約数和(自身を除く): 16241145

約数列:

[1, 3, 5, 11, 15, 33, 55, 79, 165, 237, 395, 869, 1185, 1621, 2607, 4345, 4863, 8105, 13035, 17831, 24315, 53493, 89155, 128059, 267465, 384177, 640295, 1408649, 1920885, 4225947, 7043245, 21129735]

約数ペア:

[(1, 21129735), (3, 7043245), (5, 4225947), (11, 1920885), (15, 1408649), (33, 640295), (55, 384177), (79, 267465), (165, 128059), (237, 89155), (395, 53493), (869, 24315), (1185, 17831), (1621, 13035), (2607, 8105), (4345, 4863)]