20747691

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:296

約数の個数: 32

約数和(自身を含む): 31795200

約数和(自身を除く): 11047509

約数列:

[1, 3, 9, 27, 71, 79, 137, 213, 237, 411, 639, 711, 1233, 1917, 2133, 3699, 5609, 9727, 10823, 16827, 29181, 32469, 50481, 87543, 97407, 151443, 262629, 292221, 768433, 2305299, 6915897, 20747691]

約数ペア:

[(1, 20747691), (3, 6915897), (9, 2305299), (27, 768433), (71, 292221), (79, 262629), (137, 151443), (213, 97407), (237, 87543), (411, 50481), (639, 32469), (711, 29181), (1233, 16827), (1917, 10823), (2133, 9727), (3699, 5609)]