20861775

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{8429}}^1$

素因数の和:8456

約数の個数: 36

約数和(自身を含む): 40767480

約数和(自身を除く): 19905705

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825, 2475, 8429, 25287, 42145, 75861, 92719, 126435, 210725, 278157, 379305, 463595, 632175, 834471, 1390785, 1896525, 2317975, 4172355, 6953925, 20861775]

約数ペア:

[(1, 20861775), (3, 6953925), (5, 4172355), (9, 2317975), (11, 1896525), (15, 1390785), (25, 834471), (33, 632175), (45, 463595), (55, 379305), (75, 278157), (99, 210725), (165, 126435), (225, 92719), (275, 75861), (495, 42145), (825, 25287), (2475, 8429)]