20394945

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{9643}}^1$

素因数の和:9701

約数の個数: 24

約数和(自身を含む): 36107136

約数和(自身を除く): 15712191

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 9643, 28929, 48215, 86787, 144645, 433935, 453221, 1359663, 2266105, 4078989, 6798315, 20394945]

約数ペア:

[(1, 20394945), (3, 6798315), (5, 4078989), (9, 2266105), (15, 1359663), (45, 453221), (47, 433935), (141, 144645), (235, 86787), (423, 48215), (705, 28929), (2115, 9643)]