28138905

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{32911}}^1$

素因数の和:32941

約数の個数: 24

約数和(自身を含む): 51342720

約数和(自身を除く): 23203815

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855, 32911, 98733, 164555, 296199, 493665, 625309, 1480995, 1875927, 3126545, 5627781, 9379635, 28138905]

約数ペア:

[(1, 28138905), (3, 9379635), (5, 5627781), (9, 3126545), (15, 1875927), (19, 1480995), (45, 625309), (57, 493665), (95, 296199), (171, 164555), (285, 98733), (855, 32911)]