20888990

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{72031}}^1$

素因数の和:72067

約数の個数: 16

約数和(自身を含む): 38897280

約数和(自身を除く): 18008290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 72031, 144062, 360155, 720310, 2088899, 4177798, 10444495, 20888990]

約数ペア:

[(1, 20888990), (2, 10444495), (5, 4177798), (10, 2088899), (29, 720310), (58, 360155), (145, 144062), (290, 72031)]