19201113

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:198

約数の個数: 36

約数和(自身を含む): 30050020

約数和(自身を除く): 10848907

約数列:

[1, 3, 9, 23, 37, 69, 109, 111, 207, 327, 333, 529, 851, 981, 1587, 2507, 2553, 4033, 4761, 7521, 7659, 12099, 19573, 22563, 36297, 57661, 58719, 92759, 172983, 176157, 278277, 518949, 834831, 2133457, 6400371, 19201113]

約数ペア:

[(1, 19201113), (3, 6400371), (9, 2133457), (23, 834831), (37, 518949), (69, 278277), (109, 176157), (111, 172983), (207, 92759), (327, 58719), (333, 57661), (529, 36297), (851, 22563), (981, 19573), (1587, 12099), (2507, 7659), (2553, 7521), (4033, 4761)]