81866060

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{2221}}^1$

素因数の和:2346

約数の個数: 48

約数和(自身を含む): 182915040

約数和(自身を除く): 101048980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 97, 190, 194, 380, 388, 485, 970, 1843, 1940, 2221, 3686, 4442, 7372, 8884, 9215, 11105, 18430, 22210, 36860, 42199, 44420, 84398, 168796, 210995, 215437, 421990, 430874, 843980, 861748, 1077185, 2154370, 4093303, 4308740, 8186606, 16373212, 20466515, 40933030, 81866060]

約数ペア:

[(1, 81866060), (2, 40933030), (4, 20466515), (5, 16373212), (10, 8186606), (19, 4308740), (20, 4093303), (38, 2154370), (76, 1077185), (95, 861748), (97, 843980), (190, 430874), (194, 421990), (380, 215437), (388, 210995), (485, 168796), (970, 84398), (1843, 44420), (1940, 42199), (2221, 36860), (3686, 22210), (4442, 18430), (7372, 11105), (8884, 9215)]