19858131

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:192

約数の個数: 36

約数和(自身を含む): 30998968

約数和(自身を除く): 11140837

約数列:

[1, 3, 9, 23, 43, 69, 97, 129, 207, 291, 387, 529, 873, 989, 1587, 2231, 2967, 4171, 4761, 6693, 8901, 12513, 20079, 22747, 37539, 51313, 68241, 95933, 153939, 204723, 287799, 461817, 863397, 2206459, 6619377, 19858131]

約数ペア:

[(1, 19858131), (3, 6619377), (9, 2206459), (23, 863397), (43, 461817), (69, 287799), (97, 204723), (129, 153939), (207, 95933), (291, 68241), (387, 51313), (529, 37539), (873, 22747), (989, 20079), (1587, 12513), (2231, 8901), (2967, 6693), (4171, 4761)]