71312720

素因数分解:

$2^4\times 5^1\times {\mathrm{891409}}^1$

素因数の和:891422

約数の個数: 20

約数和(自身を含む): 165802260

約数和(自身を除く): 94489540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 891409, 1782818, 3565636, 4457045, 7131272, 8914090, 14262544, 17828180, 35656360, 71312720]

約数ペア:

[(1, 71312720), (2, 35656360), (4, 17828180), (5, 14262544), (8, 8914090), (10, 7131272), (16, 4457045), (20, 3565636), (40, 1782818), (80, 891409)]