21355993

素因数分解:

${\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{433}}^1$

素因数の和:544

約数の個数: 16

約数和(自身を含む): 23220736

約数和(自身を除く): 1864743

約数列:

[1, 31, 37, 43, 433, 1147, 1333, 1591, 13423, 16021, 18619, 49321, 496651, 577189, 688903, 21355993]

約数ペア:

[(1, 21355993), (31, 688903), (37, 577189), (43, 496651), (433, 49321), (1147, 18619), (1333, 16021), (1591, 13423)]