21253160

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{2753}}^1$

素因数の和:2957

約数の個数: 32

約数和(自身を含む): 48084840

約数和(自身を除く): 26831680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 2753, 3860, 5506, 7720, 11012, 13765, 22024, 27530, 55060, 110120, 531329, 1062658, 2125316, 2656645, 4250632, 5313290, 10626580, 21253160]

約数ペア:

[(1, 21253160), (2, 10626580), (4, 5313290), (5, 4250632), (8, 2656645), (10, 2125316), (20, 1062658), (40, 531329), (193, 110120), (386, 55060), (772, 27530), (965, 22024), (1544, 13765), (1930, 11012), (2753, 7720), (3860, 5506)]