21999995

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{179}}^1\times {\mathrm{523}}^1$

素因数の和:754

約数の個数: 16

約数和(自身を含む): 27164160

約数和(自身を除く): 5164165

約数列:

[1, 5, 47, 179, 235, 523, 895, 2615, 8413, 24581, 42065, 93617, 122905, 468085, 4399999, 21999995]

約数ペア:

[(1, 21999995), (5, 4399999), (47, 468085), (179, 122905), (235, 93617), (523, 42065), (895, 24581), (2615, 8413)]