18906140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4523}}^1$

素因数の和:4562

約数の個数: 48

約数和(自身を含む): 45601920

約数和(自身を除く): 26695780

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 4523, 9046, 18092, 22615, 45230, 49753, 85937, 90460, 99506, 171874, 199012, 248765, 343748, 429685, 497530, 859370, 945307, 995060, 1718740, 1890614, 3781228, 4726535, 9453070, 18906140]

約数ペア:

[(1, 18906140), (2, 9453070), (4, 4726535), (5, 3781228), (10, 1890614), (11, 1718740), (19, 995060), (20, 945307), (22, 859370), (38, 497530), (44, 429685), (55, 343748), (76, 248765), (95, 199012), (110, 171874), (190, 99506), (209, 90460), (220, 85937), (380, 49753), (418, 45230), (836, 22615), (1045, 18092), (2090, 9046), (4180, 4523)]