21620385

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8429}}^1$

素因数の和:8462

約数の個数: 32

約数和(自身を含む): 40464000

約数和(自身を除く): 18843615

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 513, 855, 2565, 8429, 25287, 42145, 75861, 126435, 160151, 227583, 379305, 480453, 800755, 1137915, 1441359, 2402265, 4324077, 7206795, 21620385]

約数ペア:

[(1, 21620385), (3, 7206795), (5, 4324077), (9, 2402265), (15, 1441359), (19, 1137915), (27, 800755), (45, 480453), (57, 379305), (95, 227583), (135, 160151), (171, 126435), (285, 75861), (513, 42145), (855, 25287), (2565, 8429)]