21873831

素因数分解:

$3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{7603}}^1$

素因数の和:7750

約数の個数: 16

約数和(自身を含む): 33579264

約数和(自身を除く): 11705433

約数列:

[1, 3, 7, 21, 137, 411, 959, 2877, 7603, 22809, 53221, 159663, 1041611, 3124833, 7291277, 21873831]

約数ペア:

[(1, 21873831), (3, 7291277), (7, 3124833), (21, 1041611), (137, 159663), (411, 53221), (959, 22809), (2877, 7603)]