28758905

素因数分解:

$5^1\times 7^1\times {\mathrm{71}}^2\times {\mathrm{163}}^1$

素因数の和:317

約数の個数: 24

約数和(自身を含む): 40249536

約数和(自身を除く): 11490631

約数列:

[1, 5, 7, 35, 71, 163, 355, 497, 815, 1141, 2485, 5041, 5705, 11573, 25205, 35287, 57865, 81011, 176435, 405055, 821683, 4108415, 5751781, 28758905]

約数ペア:

[(1, 28758905), (5, 5751781), (7, 4108415), (35, 821683), (71, 405055), (163, 176435), (355, 81011), (497, 57865), (815, 35287), (1141, 25205), (2485, 11573), (5041, 5705)]