19857615

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1811}}^1$

素因数の和:1879

約数の個数: 32

約数和(自身を含む): 34442496

約数和(自身を除く): 14584881

約数列:

[1, 3, 5, 15, 17, 43, 51, 85, 129, 215, 255, 645, 731, 1811, 2193, 3655, 5433, 9055, 10965, 27165, 30787, 77873, 92361, 153935, 233619, 389365, 461805, 1168095, 1323841, 3971523, 6619205, 19857615]

約数ペア:

[(1, 19857615), (3, 6619205), (5, 3971523), (15, 1323841), (17, 1168095), (43, 461805), (51, 389365), (85, 233619), (129, 153935), (215, 92361), (255, 77873), (645, 30787), (731, 27165), (1811, 10965), (2193, 9055), (3655, 5433)]