20419600

素因数分解:

$2^4\times 5^2\times {\mathrm{71}}^1\times {\mathrm{719}}^1$

素因数の和:808

約数の個数: 60

約数和(自身を含む): 49818240

約数和(自身を除く): 29398640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 71, 80, 100, 142, 200, 284, 355, 400, 568, 710, 719, 1136, 1420, 1438, 1775, 2840, 2876, 3550, 3595, 5680, 5752, 7100, 7190, 11504, 14200, 14380, 17975, 28400, 28760, 35950, 51049, 57520, 71900, 102098, 143800, 204196, 255245, 287600, 408392, 510490, 816784, 1020980, 1276225, 2041960, 2552450, 4083920, 5104900, 10209800, 20419600]

約数ペア:

[(1, 20419600), (2, 10209800), (4, 5104900), (5, 4083920), (8, 2552450), (10, 2041960), (16, 1276225), (20, 1020980), (25, 816784), (40, 510490), (50, 408392), (71, 287600), (80, 255245), (100, 204196), (142, 143800), (200, 102098), (284, 71900), (355, 57520), (400, 51049), (568, 35950), (710, 28760), (719, 28400), (1136, 17975), (1420, 14380), (1438, 14200), (1775, 11504), (2840, 7190), (2876, 7100), (3550, 5752), (3595, 5680)]