21480135

素因数分解:

$3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{13903}}^1$

素因数の和:14014

約数の個数: 16

約数和(自身を含む): 34704384

約数和(自身を除く): 13224249

約数列:

[1, 3, 5, 15, 103, 309, 515, 1545, 13903, 41709, 69515, 208545, 1432009, 4296027, 7160045, 21480135]

約数ペア:

[(1, 21480135), (3, 7160045), (5, 4296027), (15, 1432009), (103, 208545), (309, 69515), (515, 41709), (1545, 13903)]