21608920

素因数分解:

$2^3\times 5^1\times {\mathrm{593}}^1\times {\mathrm{911}}^1$

素因数の和:1515

約数の個数: 32

約数和(自身を含む): 48755520

約数和(自身を除く): 27146600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 593, 911, 1186, 1822, 2372, 2965, 3644, 4555, 4744, 5930, 7288, 9110, 11860, 18220, 23720, 36440, 540223, 1080446, 2160892, 2701115, 4321784, 5402230, 10804460, 21608920]

約数ペア:

[(1, 21608920), (2, 10804460), (4, 5402230), (5, 4321784), (8, 2701115), (10, 2160892), (20, 1080446), (40, 540223), (593, 36440), (911, 23720), (1186, 18220), (1822, 11860), (2372, 9110), (2965, 7288), (3644, 5930), (4555, 4744)]