18045909

素因数分解:

$3^5\times 7^1\times {\mathrm{103}}^2$

素因数の和:228

約数の個数: 36

約数和(自身を含む): 31196256

約数和(自身を除く): 13150347

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 103, 189, 243, 309, 567, 721, 927, 1701, 2163, 2781, 6489, 8343, 10609, 19467, 25029, 31827, 58401, 74263, 95481, 175203, 222789, 286443, 668367, 859329, 2005101, 2577987, 6015303, 18045909]

約数ペア:

[(1, 18045909), (3, 6015303), (7, 2577987), (9, 2005101), (21, 859329), (27, 668367), (63, 286443), (81, 222789), (103, 175203), (189, 95481), (243, 74263), (309, 58401), (567, 31827), (721, 25029), (927, 19467), (1701, 10609), (2163, 8343), (2781, 6489)]