20538680

素因数分解:

$2^3\times 5^1\times {\mathrm{463}}^1\times {\mathrm{1109}}^1$

素因数の和:1583

約数の個数: 32

約数和(自身を含む): 46353600

約数和(自身を除く): 25814920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 463, 926, 1109, 1852, 2218, 2315, 3704, 4436, 4630, 5545, 8872, 9260, 11090, 18520, 22180, 44360, 513467, 1026934, 2053868, 2567335, 4107736, 5134670, 10269340, 20538680]

約数ペア:

[(1, 20538680), (2, 10269340), (4, 5134670), (5, 4107736), (8, 2567335), (10, 2053868), (20, 1026934), (40, 513467), (463, 44360), (926, 22180), (1109, 18520), (1852, 11090), (2218, 9260), (2315, 8872), (3704, 5545), (4436, 4630)]