20870481

素因数分解:

$3^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1\times {\mathrm{607}}^1$

素因数の和:840

約数の個数: 16

約数和(自身を含む): 28434944

約数和(自身を除く): 7564463

約数列:

[1, 3, 73, 157, 219, 471, 607, 1821, 11461, 34383, 44311, 95299, 132933, 285897, 6956827, 20870481]

約数ペア:

[(1, 20870481), (3, 6956827), (73, 285897), (157, 132933), (219, 95299), (471, 44311), (607, 34383), (1821, 11461)]