12720175

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{39139}}^1$

素因数の和:39162

約数の個数: 12

約数和(自身を含む): 16986760

約数和(自身を除く): 4266585

約数列:

[1, 5, 13, 25, 65, 325, 39139, 195695, 508807, 978475, 2544035, 12720175]

約数ペア:

[(1, 12720175), (5, 2544035), (13, 978475), (25, 508807), (65, 195695), (325, 39139)]