21257727

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{1613}}^1$

素因数の和:1830

約数の個数: 16

約数和(自身を含む): 29749248

約数和(自身を除く): 8491521

約数列:

[1, 3, 23, 69, 191, 573, 1613, 4393, 4839, 13179, 37099, 111297, 308083, 924249, 7085909, 21257727]

約数ペア:

[(1, 21257727), (3, 7085909), (23, 924249), (69, 308083), (191, 111297), (573, 37099), (1613, 13179), (4393, 4839)]