18019827

素因数分解:

$3^4\times 7^1\times {\mathrm{61}}^1\times {\mathrm{521}}^1$

素因数の和:601

約数の個数: 40

約数和(自身を含む): 31328352

約数和(自身を除く): 13308525

約数列:

[1, 3, 7, 9, 21, 27, 61, 63, 81, 183, 189, 427, 521, 549, 567, 1281, 1563, 1647, 3647, 3843, 4689, 4941, 10941, 11529, 14067, 31781, 32823, 34587, 42201, 95343, 98469, 222467, 286029, 295407, 667401, 858087, 2002203, 2574261, 6006609, 18019827]

約数ペア:

[(1, 18019827), (3, 6006609), (7, 2574261), (9, 2002203), (21, 858087), (27, 667401), (61, 295407), (63, 286029), (81, 222467), (183, 98469), (189, 95343), (427, 42201), (521, 34587), (549, 32823), (567, 31781), (1281, 14067), (1563, 11529), (1647, 10941), (3647, 4941), (3843, 4689)]