21373881

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1\times {\mathrm{743}}^1$

素因数の和:1012

約数の個数: 16

約数和(自身を含む): 29331456

約数和(自身を除く): 7957575

約数列:

[1, 3, 43, 129, 223, 669, 743, 2229, 9589, 28767, 31949, 95847, 165689, 497067, 7124627, 21373881]

約数ペア:

[(1, 21373881), (3, 7124627), (43, 497067), (129, 165689), (223, 95847), (669, 31949), (743, 28767), (2229, 9589)]