19556478

素因数分解:

$2^1\times 3^4\times {\mathrm{61}}^1\times {\mathrm{1979}}^1$

素因数の和:2054

約数の個数: 40

約数和(自身を含む): 44561880

約数和(自身を除く): 25005402

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 61, 81, 122, 162, 183, 366, 549, 1098, 1647, 1979, 3294, 3958, 4941, 5937, 9882, 11874, 17811, 35622, 53433, 106866, 120719, 160299, 241438, 320598, 362157, 724314, 1086471, 2172942, 3259413, 6518826, 9778239, 19556478]

約数ペア:

[(1, 19556478), (2, 9778239), (3, 6518826), (6, 3259413), (9, 2172942), (18, 1086471), (27, 724314), (54, 362157), (61, 320598), (81, 241438), (122, 160299), (162, 120719), (183, 106866), (366, 53433), (549, 35622), (1098, 17811), (1647, 11874), (1979, 9882), (3294, 5937), (3958, 4941)]