20166096980

素因数分解:

$2^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{971}}^1\times {\mathrm{2081}}^1$

素因数の和:3560

約数の個数: 48

約数和(自身を含む): 42497784000

約数和(自身を除く): 22331687020

約数列:

[1, 2, 4, 5, 10, 20, 499, 971, 998, 1942, 1996, 2081, 2495, 3884, 4162, 4855, 4990, 8324, 9710, 9980, 10405, 19420, 20810, 41620, 484529, 969058, 1038419, 1938116, 2020651, 2076838, 2422645, 4041302, 4153676, 4845290, 5192095, 8082604, 9690580, 10103255, 10384190, 20206510, 20768380, 40413020, 1008304849, 2016609698, 4033219396, 5041524245, 10083048490, 20166096980]

約数ペア:

[(1, 20166096980), (2, 10083048490), (4, 5041524245), (5, 4033219396), (10, 2016609698), (20, 1008304849), (499, 40413020), (971, 20768380), (998, 20206510), (1942, 10384190), (1996, 10103255), (2081, 9690580), (2495, 8082604), (3884, 5192095), (4162, 4845290), (4855, 4153676), (4990, 4041302), (8324, 2422645), (9710, 2076838), (9980, 2020651), (10405, 1938116), (19420, 1038419), (20810, 969058), (41620, 484529)]