1278693315

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{400217}}^1$

素因数の和:400299

約数の個数: 24

約数和(自身を含む): 2247624288

約数和(自身を除く): 968930973

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 400217, 1200651, 2001085, 3601953, 6003255, 18009765, 28415407, 85246221, 142077035, 255738663, 426231105, 1278693315]

約数ペア:

[(1, 1278693315), (3, 426231105), (5, 255738663), (9, 142077035), (15, 85246221), (45, 28415407), (71, 18009765), (213, 6003255), (355, 3601953), (639, 2001085), (1065, 1200651), (3195, 400217)]