20996345543516

素因数分解:

$2^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1999}}^1\times {\mathrm{2738119}}^1$

素因数の和:2740266

約数の個数: 48

約数和(自身を含む): 42320382720000

約数和(自身を除く): 21324037176484

約数列:

[1, 2, 4, 7, 14, 28, 137, 274, 548, 959, 1918, 1999, 3836, 3998, 7996, 13993, 27986, 55972, 273863, 547726, 1095452, 1917041, 2738119, 3834082, 5476238, 7668164, 10952476, 19166833, 38333666, 76667332, 375122303, 750244606, 1500489212, 2625856121, 5251712242, 5473499881, 10503424484, 10946999762, 21893999524, 38314499167, 76628998334, 153257996668, 749869483697, 1499738967394, 2999477934788, 5249086385879, 10498172771758, 20996345543516]

約数ペア:

[(1, 20996345543516), (2, 10498172771758), (4, 5249086385879), (7, 2999477934788), (14, 1499738967394), (28, 749869483697), (137, 153257996668), (274, 76628998334), (548, 38314499167), (959, 21893999524), (1918, 10946999762), (1999, 10503424484), (3836, 5473499881), (3998, 5251712242), (7996, 2625856121), (13993, 1500489212), (27986, 750244606), (55972, 375122303), (273863, 76667332), (547726, 38333666), (1095452, 19166833), (1917041, 10952476), (2738119, 7668164), (3834082, 5476238)]