18706051

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{349}}^1$

素因数の和:419

約数の個数: 32

約数和(自身を含む): 25088000

約数和(自身を除く): 6381949

約数列:

[1, 7, 13, 19, 31, 91, 133, 217, 247, 349, 403, 589, 1729, 2443, 2821, 4123, 4537, 6631, 7657, 10819, 31759, 46417, 53599, 75733, 86203, 140647, 205561, 603421, 984529, 1438927, 2672293, 18706051]

約数ペア:

[(1, 18706051), (7, 2672293), (13, 1438927), (19, 984529), (31, 603421), (91, 205561), (133, 140647), (217, 86203), (247, 75733), (349, 53599), (403, 46417), (589, 31759), (1729, 10819), (2443, 7657), (2821, 6631), (4123, 4537)]