19854849

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{4357}}^1$

素因数の和:4405

約数の個数: 24

約数和(自身を含む): 31795968

約数和(自身を除く): 11941119

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 4357, 4557, 13071, 30499, 91497, 135067, 213493, 405201, 640479, 945469, 2836407, 6618283, 19854849]

約数ペア:

[(1, 19854849), (3, 6618283), (7, 2836407), (21, 945469), (31, 640479), (49, 405201), (93, 213493), (147, 135067), (217, 91497), (651, 30499), (1519, 13071), (4357, 4557)]