20173780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{857}}^1$

素因数の和:984

約数の個数: 48

約数和(自身を含む): 46702656

約数和(自身を除く): 26528876

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 107, 110, 214, 220, 428, 535, 857, 1070, 1177, 1714, 2140, 2354, 3428, 4285, 4708, 5885, 8570, 9427, 11770, 17140, 18854, 23540, 37708, 47135, 91699, 94270, 183398, 188540, 366796, 458495, 916990, 1008689, 1833980, 2017378, 4034756, 5043445, 10086890, 20173780]

約数ペア:

[(1, 20173780), (2, 10086890), (4, 5043445), (5, 4034756), (10, 2017378), (11, 1833980), (20, 1008689), (22, 916990), (44, 458495), (55, 366796), (107, 188540), (110, 183398), (214, 94270), (220, 91699), (428, 47135), (535, 37708), (857, 23540), (1070, 18854), (1177, 17140), (1714, 11770), (2140, 9427), (2354, 8570), (3428, 5885), (4285, 4708)]