20427560

素因数分解:

$2^3\times 5^1\times {\mathrm{463}}^1\times {\mathrm{1103}}^1$

素因数の和:1577

約数の個数: 32

約数和(自身を含む): 46103040

約数和(自身を除く): 25675480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 463, 926, 1103, 1852, 2206, 2315, 3704, 4412, 4630, 5515, 8824, 9260, 11030, 18520, 22060, 44120, 510689, 1021378, 2042756, 2553445, 4085512, 5106890, 10213780, 20427560]

約数ペア:

[(1, 20427560), (2, 10213780), (4, 5106890), (5, 4085512), (8, 2553445), (10, 2042756), (20, 1021378), (40, 510689), (463, 44120), (926, 22060), (1103, 18520), (1852, 11030), (2206, 9260), (2315, 8824), (3704, 5515), (4412, 4630)]