1297215

素因数分解:

$3^4\times 5^1\times {\mathrm{3203}}^1$

素因数の和:3220

約数の個数: 20

約数和(自身を含む): 2326104

約数和(自身を除く): 1028889

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 3203, 9609, 16015, 28827, 48045, 86481, 144135, 259443, 432405, 1297215]

約数ペア:

[(1, 1297215), (3, 432405), (5, 259443), (9, 144135), (15, 86481), (27, 48045), (45, 28827), (81, 16015), (135, 9609), (405, 3203)]