138020015

素因数分解:

$5^1\times 7^2\times {\mathrm{613}}^1\times {\mathrm{919}}^1$

素因数の和:1551

約数の個数: 24

約数和(自身を含む): 193188960

約数和(自身を除く): 55168945

約数列:

[1, 5, 7, 35, 49, 245, 613, 919, 3065, 4291, 4595, 6433, 21455, 30037, 32165, 45031, 150185, 225155, 563347, 2816735, 3943429, 19717145, 27604003, 138020015]

約数ペア:

[(1, 138020015), (5, 27604003), (7, 19717145), (35, 3943429), (49, 2816735), (245, 563347), (613, 225155), (919, 150185), (3065, 45031), (4291, 32165), (4595, 30037), (6433, 21455)]