21228039

素因数分解:

$3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{1511}}^1$

素因数の和:1747

約数の個数: 24

約数和(自身を含む): 35223552

約数和(自身を除く): 13995513

約数列:

[1, 3, 7, 9, 21, 63, 223, 669, 1511, 1561, 2007, 4533, 4683, 10577, 13599, 14049, 31731, 95193, 336953, 1010859, 2358671, 3032577, 7076013, 21228039]

約数ペア:

[(1, 21228039), (3, 7076013), (7, 3032577), (9, 2358671), (21, 1010859), (63, 336953), (223, 95193), (669, 31731), (1511, 14049), (1561, 13599), (2007, 10577), (4533, 4683)]