21254460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1979}}^1$

素因数の和:2170

約数の個数: 48

約数和(自身を含む): 59875200

約数和(自身を除く): 38620740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 179, 358, 537, 716, 895, 1074, 1790, 1979, 2148, 2685, 3580, 3958, 5370, 5937, 7916, 9895, 10740, 11874, 19790, 23748, 29685, 39580, 59370, 118740, 354241, 708482, 1062723, 1416964, 1771205, 2125446, 3542410, 4250892, 5313615, 7084820, 10627230, 21254460]

約数ペア:

[(1, 21254460), (2, 10627230), (3, 7084820), (4, 5313615), (5, 4250892), (6, 3542410), (10, 2125446), (12, 1771205), (15, 1416964), (20, 1062723), (30, 708482), (60, 354241), (179, 118740), (358, 59370), (537, 39580), (716, 29685), (895, 23748), (1074, 19790), (1790, 11874), (1979, 10740), (2148, 9895), (2685, 7916), (3580, 5937), (3958, 5370)]