2018785420

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{739}}^1\times {\mathrm{997}}^1$

素因数の和:1882

約数の個数: 48

約数和(自身を含む): 4280461920

約数和(自身を除く): 2261676500

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 739, 997, 1370, 1478, 1994, 2740, 2956, 3695, 3988, 4985, 7390, 9970, 14780, 19940, 101243, 136589, 202486, 273178, 404972, 506215, 546356, 682945, 736783, 1012430, 1365890, 1473566, 2024860, 2731780, 2947132, 3683915, 7367830, 14735660, 100939271, 201878542, 403757084, 504696355, 1009392710, 2018785420]

約数ペア:

[(1, 2018785420), (2, 1009392710), (4, 504696355), (5, 403757084), (10, 201878542), (20, 100939271), (137, 14735660), (274, 7367830), (548, 3683915), (685, 2947132), (739, 2731780), (997, 2024860), (1370, 1473566), (1478, 1365890), (1994, 1012430), (2740, 736783), (2956, 682945), (3695, 546356), (3988, 506215), (4985, 404972), (7390, 273178), (9970, 202486), (14780, 136589), (19940, 101243)]