20397080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{307}}^1$

素因数の和:480

約数の個数: 64

約数和(自身を含む): 50561280

約数和(自身を除く): 30164200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 151, 220, 302, 307, 440, 604, 614, 755, 1208, 1228, 1510, 1535, 1661, 2456, 3020, 3070, 3322, 3377, 6040, 6140, 6644, 6754, 8305, 12280, 13288, 13508, 16610, 16885, 27016, 33220, 33770, 46357, 66440, 67540, 92714, 135080, 185428, 231785, 370856, 463570, 509927, 927140, 1019854, 1854280, 2039708, 2549635, 4079416, 5099270, 10198540, 20397080]

約数ペア:

[(1, 20397080), (2, 10198540), (4, 5099270), (5, 4079416), (8, 2549635), (10, 2039708), (11, 1854280), (20, 1019854), (22, 927140), (40, 509927), (44, 463570), (55, 370856), (88, 231785), (110, 185428), (151, 135080), (220, 92714), (302, 67540), (307, 66440), (440, 46357), (604, 33770), (614, 33220), (755, 27016), (1208, 16885), (1228, 16610), (1510, 13508), (1535, 13288), (1661, 12280), (2456, 8305), (3020, 6754), (3070, 6644), (3322, 6140), (3377, 6040)]