21742745

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{13463}}^1$

素因数の和:13504

約数の個数: 16

約数和(自身を含む): 29082240

約数和(自身を除く): 7339495

約数列:

[1, 5, 17, 19, 85, 95, 323, 1615, 13463, 67315, 228871, 255797, 1144355, 1278985, 4348549, 21742745]

約数ペア:

[(1, 21742745), (5, 4348549), (17, 1278985), (19, 1144355), (85, 255797), (95, 228871), (323, 67315), (1615, 13463)]