21055377

素因数分解:

$3^1\times 7^1\times {\mathrm{677}}^1\times {\mathrm{1481}}^1$

素因数の和:2168

約数の個数: 16

約数和(自身を含む): 32153472

約数和(自身を除く): 11098095

約数列:

[1, 3, 7, 21, 677, 1481, 2031, 4443, 4739, 10367, 14217, 31101, 1002637, 3007911, 7018459, 21055377]

約数ペア:

[(1, 21055377), (3, 7018459), (7, 3007911), (21, 1002637), (677, 31101), (1481, 14217), (2031, 10367), (4443, 4739)]