19988874

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{277}}^1$

素因数の和:515

約数の個数: 48

約数和(自身を含む): 45970080

約数和(自身を除く): 25981206

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 211, 277, 342, 422, 554, 633, 831, 1266, 1662, 1899, 2493, 3798, 4009, 4986, 5263, 8018, 10526, 12027, 15789, 24054, 31578, 36081, 47367, 58447, 72162, 94734, 116894, 175341, 350682, 526023, 1052046, 1110493, 2220986, 3331479, 6662958, 9994437, 19988874]

約数ペア:

[(1, 19988874), (2, 9994437), (3, 6662958), (6, 3331479), (9, 2220986), (18, 1110493), (19, 1052046), (38, 526023), (57, 350682), (114, 175341), (171, 116894), (211, 94734), (277, 72162), (342, 58447), (422, 47367), (554, 36081), (633, 31578), (831, 24054), (1266, 15789), (1662, 12027), (1899, 10526), (2493, 8018), (3798, 5263), (4009, 4986)]