20216679

素因数分解:

$3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{7027}}^1$

素因数の和:7174

約数の個数: 16

約数和(自身を含む): 31035648

約数和(自身を除く): 10818969

約数列:

[1, 3, 7, 21, 137, 411, 959, 2877, 7027, 21081, 49189, 147567, 962699, 2888097, 6738893, 20216679]

約数ペア:

[(1, 20216679), (3, 6738893), (7, 2888097), (21, 962699), (137, 147567), (411, 49189), (959, 21081), (2877, 7027)]