19538029

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1\times {\mathrm{503}}^1$

素因数の和:720

約数の個数: 16

約数和(自身を含む): 23224320

約数和(自身を除く): 3686291

約数列:

[1, 7, 31, 179, 217, 503, 1253, 3521, 5549, 15593, 38843, 90037, 109151, 630259, 2791147, 19538029]

約数ペア:

[(1, 19538029), (7, 2791147), (31, 630259), (179, 109151), (217, 90037), (503, 38843), (1253, 15593), (3521, 5549)]