21386475

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{8641}}^1$

素因数の和:8668

約数の個数: 36

約数和(自身を含む): 41792712

約数和(自身を除く): 20406237

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825, 2475, 8641, 25923, 43205, 77769, 95051, 129615, 216025, 285153, 388845, 475255, 648075, 855459, 1425765, 1944225, 2376275, 4277295, 7128825, 21386475]

約数ペア:

[(1, 21386475), (3, 7128825), (5, 4277295), (9, 2376275), (11, 1944225), (15, 1425765), (25, 855459), (33, 648075), (45, 475255), (55, 388845), (75, 285153), (99, 216025), (165, 129615), (225, 95051), (275, 77769), (495, 43205), (825, 25923), (2475, 8641)]