20672510

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{277}}^1\times {\mathrm{439}}^1$

素因数の和:740

約数の個数: 32

約数和(自身を含む): 39631680

約数和(自身を除く): 18959170

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 277, 439, 554, 878, 1385, 2195, 2770, 4390, 4709, 7463, 9418, 14926, 23545, 37315, 47090, 74630, 121603, 243206, 608015, 1216030, 2067251, 4134502, 10336255, 20672510]

約数ペア:

[(1, 20672510), (2, 10336255), (5, 4134502), (10, 2067251), (17, 1216030), (34, 608015), (85, 243206), (170, 121603), (277, 74630), (439, 47090), (554, 37315), (878, 23545), (1385, 14926), (2195, 9418), (2770, 7463), (4390, 4709)]