209399519

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{6907}}^1$

素因数の和:7046

約数の個数: 16

約数和(自身を含む): 246698496

約数和(自身を除く): 37298977

約数列:

[1, 7, 61, 71, 427, 497, 4331, 6907, 30317, 48349, 421327, 490397, 2949289, 3432779, 29914217, 209399519]

約数ペア:

[(1, 209399519), (7, 29914217), (61, 3432779), (71, 2949289), (427, 490397), (497, 421327), (4331, 48349), (6907, 30317)]