21360825

素因数分解:

$3^2\times 5^2\times {\mathrm{139}}^1\times {\mathrm{683}}^1$

素因数の和:838

約数の個数: 36

約数和(自身を含む): 38591280

約数和(自身を除く): 17230455

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 139, 225, 417, 683, 695, 1251, 2049, 2085, 3415, 3475, 6147, 6255, 10245, 10425, 17075, 30735, 31275, 51225, 94937, 153675, 284811, 474685, 854433, 1424055, 2373425, 4272165, 7120275, 21360825]

約数ペア:

[(1, 21360825), (3, 7120275), (5, 4272165), (9, 2373425), (15, 1424055), (25, 854433), (45, 474685), (75, 284811), (139, 153675), (225, 94937), (417, 51225), (683, 31275), (695, 30735), (1251, 17075), (2049, 10425), (2085, 10245), (3415, 6255), (3475, 6147)]