20536780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{277}}^1\times {\mathrm{337}}^1$

素因数の和:634

約数の個数: 48

約数和(自身を含む): 47357856

約数和(自身を除く): 26821076

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 277, 337, 554, 674, 1108, 1348, 1385, 1685, 2770, 3047, 3370, 3707, 5540, 6094, 6740, 7414, 12188, 14828, 15235, 18535, 30470, 37070, 60940, 74140, 93349, 186698, 373396, 466745, 933490, 1026839, 1866980, 2053678, 4107356, 5134195, 10268390, 20536780]

約数ペア:

[(1, 20536780), (2, 10268390), (4, 5134195), (5, 4107356), (10, 2053678), (11, 1866980), (20, 1026839), (22, 933490), (44, 466745), (55, 373396), (110, 186698), (220, 93349), (277, 74140), (337, 60940), (554, 37070), (674, 30470), (1108, 18535), (1348, 15235), (1385, 14828), (1685, 12188), (2770, 7414), (3047, 6740), (3370, 6094), (3707, 5540)]