18690789

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{311}}^1$

素因数の和:417

約数の個数: 32

約数和(自身を含む): 28514304

約数和(自身を除く): 9823515

約数列:

[1, 3, 13, 23, 39, 67, 69, 201, 299, 311, 871, 897, 933, 1541, 2613, 4043, 4623, 7153, 12129, 20033, 20837, 21459, 60099, 62511, 92989, 270881, 278967, 479251, 812643, 1437753, 6230263, 18690789]

約数ペア:

[(1, 18690789), (3, 6230263), (13, 1437753), (23, 812643), (39, 479251), (67, 278967), (69, 270881), (201, 92989), (299, 62511), (311, 60099), (871, 21459), (897, 20837), (933, 20033), (1541, 12129), (2613, 7153), (4043, 4623)]