18939193

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2851}}^1$

素因数の和:2944

約数の個数: 16

約数和(自身を含む): 23637376

約数和(自身を除く): 4698183

約数列:

[1, 7, 13, 73, 91, 511, 949, 2851, 6643, 19957, 37063, 208123, 259441, 1456861, 2705599, 18939193]

約数ペア:

[(1, 18939193), (7, 2705599), (13, 1456861), (73, 259441), (91, 208123), (511, 37063), (949, 19957), (2851, 6643)]