21026760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1279}}^1$

素因数の和:1430

約数の個数: 64

約数和(自身を含む): 63590400

約数和(自身を除く): 42563640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 137, 274, 411, 548, 685, 822, 1096, 1279, 1370, 1644, 2055, 2558, 2740, 3288, 3837, 4110, 5116, 5480, 6395, 7674, 8220, 10232, 12790, 15348, 16440, 19185, 25580, 30696, 38370, 51160, 76740, 153480, 175223, 350446, 525669, 700892, 876115, 1051338, 1401784, 1752230, 2102676, 2628345, 3504460, 4205352, 5256690, 7008920, 10513380, 21026760]

約数ペア:

[(1, 21026760), (2, 10513380), (3, 7008920), (4, 5256690), (5, 4205352), (6, 3504460), (8, 2628345), (10, 2102676), (12, 1752230), (15, 1401784), (20, 1051338), (24, 876115), (30, 700892), (40, 525669), (60, 350446), (120, 175223), (137, 153480), (274, 76740), (411, 51160), (548, 38370), (685, 30696), (822, 25580), (1096, 19185), (1279, 16440), (1370, 15348), (1644, 12790), (2055, 10232), (2558, 8220), (2740, 7674), (3288, 6395), (3837, 5480), (4110, 5116)]