64682540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{248779}}^1$

素因数の和:248801

約数の個数: 24

約数和(自身を含む): 146282640

約数和(自身を除く): 81600100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 248779, 497558, 995116, 1243895, 2487790, 3234127, 4975580, 6468254, 12936508, 16170635, 32341270, 64682540]

約数ペア:

[(1, 64682540), (2, 32341270), (4, 16170635), (5, 12936508), (10, 6468254), (13, 4975580), (20, 3234127), (26, 2487790), (52, 1243895), (65, 995116), (130, 497558), (260, 248779)]