20218457

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{2393}}^1$

素因数の和:2488

約数の個数: 16

約数和(自身を含む): 24820992

約数和(自身を除く): 4602535

約数列:

[1, 7, 17, 71, 119, 497, 1207, 2393, 8449, 16751, 40681, 169903, 284767, 1189321, 2888351, 20218457]

約数ペア:

[(1, 20218457), (7, 2888351), (17, 1189321), (71, 284767), (119, 169903), (497, 40681), (1207, 16751), (2393, 8449)]