21001019

素因数分解:

${\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{373}}^1$

素因数の和:518

約数の個数: 16

約数和(自身を含む): 23373504

約数和(自身を除く): 2372485

約数列:

[1, 13, 61, 71, 373, 793, 923, 4331, 4849, 22753, 26483, 56303, 295789, 344279, 1615463, 21001019]

約数ペア:

[(1, 21001019), (13, 1615463), (61, 344279), (71, 295789), (373, 56303), (793, 26483), (923, 22753), (4331, 4849)]