178952020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{688277}}^1$

素因数の和:688299

約数の個数: 24

約数和(自身を含む): 404707464

約数和(自身を除く): 225755444

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 688277, 1376554, 2753108, 3441385, 6882770, 8947601, 13765540, 17895202, 35790404, 44738005, 89476010, 178952020]

約数ペア:

[(1, 178952020), (2, 89476010), (4, 44738005), (5, 35790404), (10, 17895202), (13, 13765540), (20, 8947601), (26, 6882770), (52, 3441385), (65, 2753108), (130, 1376554), (260, 688277)]