20574800

素因数分解:

$2^4\times 5^2\times {\mathrm{51437}}^1$

素因数の和:51455

約数の個数: 30

約数和(自身を含む): 49431918

約数和(自身を除く): 28857118

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 51437, 102874, 205748, 257185, 411496, 514370, 822992, 1028740, 1285925, 2057480, 2571850, 4114960, 5143700, 10287400, 20574800]

約数ペア:

[(1, 20574800), (2, 10287400), (4, 5143700), (5, 4114960), (8, 2571850), (10, 2057480), (16, 1285925), (20, 1028740), (25, 822992), (40, 514370), (50, 411496), (80, 257185), (100, 205748), (200, 102874), (400, 51437)]