78722540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{302779}}^1$

素因数の和:302801

約数の個数: 24

約数和(自身を含む): 178034640

約数和(自身を除く): 99312100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 302779, 605558, 1211116, 1513895, 3027790, 3936127, 6055580, 7872254, 15744508, 19680635, 39361270, 78722540]

約数ペア:

[(1, 78722540), (2, 39361270), (4, 19680635), (5, 15744508), (10, 7872254), (13, 6055580), (20, 3936127), (26, 3027790), (52, 1513895), (65, 1211116), (130, 605558), (260, 302779)]