80175820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{2089}}^1$

素因数の和:2218

約数の個数: 48

約数和(自身を含む): 179071200

約数和(自身を除く): 98895380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 101, 190, 202, 380, 404, 505, 1010, 1919, 2020, 2089, 3838, 4178, 7676, 8356, 9595, 10445, 19190, 20890, 38380, 39691, 41780, 79382, 158764, 198455, 210989, 396910, 421978, 793820, 843956, 1054945, 2109890, 4008791, 4219780, 8017582, 16035164, 20043955, 40087910, 80175820]

約数ペア:

[(1, 80175820), (2, 40087910), (4, 20043955), (5, 16035164), (10, 8017582), (19, 4219780), (20, 4008791), (38, 2109890), (76, 1054945), (95, 843956), (101, 793820), (190, 421978), (202, 396910), (380, 210989), (404, 198455), (505, 158764), (1010, 79382), (1919, 41780), (2020, 39691), (2089, 38380), (3838, 20890), (4178, 19190), (7676, 10445), (8356, 9595)]