20443120

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5437}}^1$

素因数の和:5497

約数の個数: 40

約数和(自身を含む): 48550464

約数和(自身を除く): 28107344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5437, 10874, 21748, 27185, 43496, 54370, 86992, 108740, 217480, 255539, 434960, 511078, 1022156, 1277695, 2044312, 2555390, 4088624, 5110780, 10221560, 20443120]

約数ペア:

[(1, 20443120), (2, 10221560), (4, 5110780), (5, 4088624), (8, 2555390), (10, 2044312), (16, 1277695), (20, 1022156), (40, 511078), (47, 434960), (80, 255539), (94, 217480), (188, 108740), (235, 86992), (376, 54370), (470, 43496), (752, 27185), (940, 21748), (1880, 10874), (3760, 5437)]