20304560

素因数分解:

$2^4\times 5^1\times {\mathrm{353}}^1\times {\mathrm{719}}^1$

素因数の和:1085

約数の個数: 40

約数和(自身を含む): 47407680

約数和(自身を除く): 27103120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 353, 706, 719, 1412, 1438, 1765, 2824, 2876, 3530, 3595, 5648, 5752, 7060, 7190, 11504, 14120, 14380, 28240, 28760, 57520, 253807, 507614, 1015228, 1269035, 2030456, 2538070, 4060912, 5076140, 10152280, 20304560]

約数ペア:

[(1, 20304560), (2, 10152280), (4, 5076140), (5, 4060912), (8, 2538070), (10, 2030456), (16, 1269035), (20, 1015228), (40, 507614), (80, 253807), (353, 57520), (706, 28760), (719, 28240), (1412, 14380), (1438, 14120), (1765, 11504), (2824, 7190), (2876, 7060), (3530, 5752), (3595, 5648)]