21545069

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{733}}^1$

素因数の和:789

約数の個数: 32

約数和(自身を含む): 29594880

約数和(自身を除く): 8049811

約数列:

[1, 7, 13, 17, 19, 91, 119, 133, 221, 247, 323, 733, 1547, 1729, 2261, 4199, 5131, 9529, 12461, 13927, 29393, 66703, 87227, 97489, 161993, 181051, 236759, 1133951, 1267357, 1657313, 3077867, 21545069]

約数ペア:

[(1, 21545069), (7, 3077867), (13, 1657313), (17, 1267357), (19, 1133951), (91, 236759), (119, 181051), (133, 161993), (221, 97489), (247, 87227), (323, 66703), (733, 29393), (1547, 13927), (1729, 12461), (2261, 9529), (4199, 5131)]