12712720

素因数分解:

$2^4\times 5^1\times {\mathrm{158909}}^1$

素因数の和:158922

約数の個数: 20

約数和(自身を含む): 29557260

約数和(自身を除く): 16844540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 158909, 317818, 635636, 794545, 1271272, 1589090, 2542544, 3178180, 6356360, 12712720]

約数ペア:

[(1, 12712720), (2, 6356360), (4, 3178180), (5, 2542544), (8, 1589090), (10, 1271272), (16, 794545), (20, 635636), (40, 317818), (80, 158909)]