21056215

素因数分解:

$5^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1\times {\mathrm{521}}^1$

素因数の和:722

約数の個数: 16

約数和(自身を含む): 25932960

約数和(自身を除く): 4876745

約数列:

[1, 5, 59, 137, 295, 521, 685, 2605, 8083, 30739, 40415, 71377, 153695, 356885, 4211243, 21056215]

約数ペア:

[(1, 21056215), (5, 4211243), (59, 356885), (137, 153695), (295, 71377), (521, 40415), (685, 30739), (2605, 8083)]