21307873

素因数分解:

${\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{223}}^1$

素因数の和:396

約数の個数: 16

約数和(自身を含む): 23224320

約数和(自身を除く): 1916447

約数列:

[1, 19, 47, 107, 223, 893, 2033, 4237, 5029, 10481, 23861, 95551, 199139, 453359, 1121467, 21307873]

約数ペア:

[(1, 21307873), (19, 1121467), (47, 453359), (107, 199139), (223, 95551), (893, 23861), (2033, 10481), (4237, 5029)]