21147135

素因数分解:

$3^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{7789}}^1$

素因数の和:7978

約数の個数: 16

約数和(自身を含む): 34026720

約数和(自身を除く): 12879585

約数列:

[1, 3, 5, 15, 181, 543, 905, 2715, 7789, 23367, 38945, 116835, 1409809, 4229427, 7049045, 21147135]

約数ペア:

[(1, 21147135), (3, 7049045), (5, 4229427), (15, 1409809), (181, 116835), (543, 38945), (905, 23367), (2715, 7789)]