20797960

素因数分解:

$2^3\times 5^1\times {\mathrm{463}}^1\times {\mathrm{1123}}^1$

素因数の和:1597

約数の個数: 32

約数和(自身を含む): 46938240

約数和(自身を除く): 26140280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 463, 926, 1123, 1852, 2246, 2315, 3704, 4492, 4630, 5615, 8984, 9260, 11230, 18520, 22460, 44920, 519949, 1039898, 2079796, 2599745, 4159592, 5199490, 10398980, 20797960]

約数ペア:

[(1, 20797960), (2, 10398980), (4, 5199490), (5, 4159592), (8, 2599745), (10, 2079796), (20, 1039898), (40, 519949), (463, 44920), (926, 22460), (1123, 18520), (1852, 11230), (2246, 9260), (2315, 8984), (3704, 5615), (4492, 4630)]