21424403

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1259}}^1$

素因数の和:1307

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 9057517

約数列:

[1, 7, 11, 13, 17, 77, 91, 119, 143, 187, 221, 1001, 1259, 1309, 1547, 2431, 8813, 13849, 16367, 17017, 21403, 96943, 114569, 149821, 180037, 235433, 278239, 1260259, 1648031, 1947673, 3060629, 21424403]

約数ペア:

[(1, 21424403), (7, 3060629), (11, 1947673), (13, 1648031), (17, 1260259), (77, 278239), (91, 235433), (119, 180037), (143, 149821), (187, 114569), (221, 96943), (1001, 21403), (1259, 17017), (1309, 16367), (1547, 13849), (2431, 8813)]