19910255

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{281}}^1\times {\mathrm{383}}^1$

素因数の和:706

約数の個数: 16

約数和(自身を含む): 24689664

約数和(自身を除く): 4779409

約数列:

[1, 5, 37, 185, 281, 383, 1405, 1915, 10397, 14171, 51985, 70855, 107623, 538115, 3982051, 19910255]

約数ペア:

[(1, 19910255), (5, 3982051), (37, 538115), (185, 107623), (281, 70855), (383, 51985), (1405, 14171), (1915, 10397)]