20517105

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{195401}}^1$

素因数の和:195416

約数の個数: 16

約数和(自身を含む): 37517184

約数和(自身を除く): 17000079

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 195401, 586203, 977005, 1367807, 2931015, 4103421, 6839035, 20517105]

約数ペア:

[(1, 20517105), (3, 6839035), (5, 4103421), (7, 2931015), (15, 1367807), (21, 977005), (35, 586203), (105, 195401)]