21940400

素因数分解:

$2^4\times 5^2\times {\mathrm{54851}}^1$

素因数の和:54869

約数の個数: 30

約数和(自身を含む): 52712772

約数和(自身を除く): 30772372

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 54851, 109702, 219404, 274255, 438808, 548510, 877616, 1097020, 1371275, 2194040, 2742550, 4388080, 5485100, 10970200, 21940400]

約数ペア:

[(1, 21940400), (2, 10970200), (4, 5485100), (5, 4388080), (8, 2742550), (10, 2194040), (16, 1371275), (20, 1097020), (25, 877616), (40, 548510), (50, 438808), (80, 274255), (100, 219404), (200, 109702), (400, 54851)]