21000605805

素因数分解:

$3^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{173}}^1\times {\mathrm{6469}}^1$

素因数の和:6795

約数の個数: 64

約数和(自身を含む): 37826208000

約数和(自身を除く): 16825602195

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 139, 173, 417, 519, 695, 865, 1251, 1557, 2085, 2595, 3753, 4671, 6255, 6469, 7785, 18765, 19407, 23355, 24047, 32345, 58221, 72141, 97035, 120235, 174663, 216423, 291105, 360705, 649269, 873315, 899191, 1082115, 1119137, 2697573, 3246345, 3357411, 4495955, 5595685, 8092719, 10072233, 13487865, 16787055, 24278157, 30216699, 40463595, 50361165, 121390785, 151083495, 155560043, 466680129, 777800215, 1400040387, 2333400645, 4200121161, 7000201935, 21000605805]

約数ペア:

[(1, 21000605805), (3, 7000201935), (5, 4200121161), (9, 2333400645), (15, 1400040387), (27, 777800215), (45, 466680129), (135, 155560043), (139, 151083495), (173, 121390785), (417, 50361165), (519, 40463595), (695, 30216699), (865, 24278157), (1251, 16787055), (1557, 13487865), (2085, 10072233), (2595, 8092719), (3753, 5595685), (4671, 4495955), (6255, 3357411), (6469, 3246345), (7785, 2697573), (18765, 1119137), (19407, 1082115), (23355, 899191), (24047, 873315), (32345, 649269), (58221, 360705), (72141, 291105), (97035, 216423), (120235, 174663)]