21924721

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1223}}^1$

素因数の和:1440

約数の個数: 16

約数和(自身を含む): 27143424

約数和(自身を除く): 5218703

約数列:

[1, 7, 13, 91, 197, 1223, 1379, 2561, 8561, 15899, 17927, 111293, 240931, 1686517, 3132103, 21924721]

約数ペア:

[(1, 21924721), (7, 3132103), (13, 1686517), (91, 240931), (197, 111293), (1223, 17927), (1379, 15899), (2561, 8561)]