21436065

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4003}}^1$

素因数の和:4038

約数の個数: 48

約数和(自身を含む): 44972928

約数和(自身を除く): 23536863

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 51, 63, 85, 105, 119, 153, 255, 315, 357, 595, 765, 1071, 1785, 4003, 5355, 12009, 20015, 28021, 36027, 60045, 68051, 84063, 140105, 180135, 204153, 252189, 340255, 420315, 476357, 612459, 1020765, 1260945, 1429071, 2381785, 3062295, 4287213, 7145355, 21436065]

約数ペア:

[(1, 21436065), (3, 7145355), (5, 4287213), (7, 3062295), (9, 2381785), (15, 1429071), (17, 1260945), (21, 1020765), (35, 612459), (45, 476357), (51, 420315), (63, 340255), (85, 252189), (105, 204153), (119, 180135), (153, 140105), (255, 84063), (315, 68051), (357, 60045), (595, 36027), (765, 28021), (1071, 20015), (1785, 12009), (4003, 5355)]