87830981

素因数分解:

$7^4\times {\mathrm{157}}^1\times {\mathrm{233}}^1$

素因数の和:418

約数の個数: 20

約数和(自身を含む): 103558572

約数和(自身を除く): 15727591

約数列:

[1, 7, 49, 157, 233, 343, 1099, 1631, 2401, 7693, 11417, 36581, 53851, 79919, 256067, 376957, 559433, 1792469, 12547283, 87830981]

約数ペア:

[(1, 87830981), (7, 12547283), (49, 1792469), (157, 559433), (233, 376957), (343, 256067), (1099, 79919), (1631, 53851), (2401, 36581), (7693, 11417)]