1220002005

素因数分解:

$3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{640421}}^1$

素因数の和:640556

約数の個数: 16

約数和(自身を含む): 1967376384

約数和(自身を除く): 747374379

約数列:

[1, 3, 5, 15, 127, 381, 635, 1905, 640421, 1921263, 3202105, 9606315, 81333467, 244000401, 406667335, 1220002005]

約数ペア:

[(1, 1220002005), (3, 406667335), (5, 244000401), (15, 81333467), (127, 9606315), (381, 3202105), (635, 1921263), (1905, 640421)]