18489965

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{577}}^1$

素因数の和:641

約数の個数: 32

約数和(自身を含む): 26218080

約数和(自身を除く): 7728115

約数列:

[1, 5, 13, 17, 29, 65, 85, 145, 221, 377, 493, 577, 1105, 1885, 2465, 2885, 6409, 7501, 9809, 16733, 32045, 37505, 49045, 83665, 127517, 217529, 284461, 637585, 1087645, 1422305, 3697993, 18489965]

約数ペア:

[(1, 18489965), (5, 3697993), (13, 1422305), (17, 1087645), (29, 637585), (65, 284461), (85, 217529), (145, 127517), (221, 83665), (377, 49045), (493, 37505), (577, 32045), (1105, 16733), (1885, 9809), (2465, 7501), (2885, 6409)]