20826890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{3343}}^1$

素因数の和:3446

約数の個数: 32

約数和(自身を含む): 43338240

約数和(自身を除く): 22511350

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 89, 178, 445, 623, 890, 1246, 3115, 3343, 6230, 6686, 16715, 23401, 33430, 46802, 117005, 234010, 297527, 595054, 1487635, 2082689, 2975270, 4165378, 10413445, 20826890]

約数ペア:

[(1, 20826890), (2, 10413445), (5, 4165378), (7, 2975270), (10, 2082689), (14, 1487635), (35, 595054), (70, 297527), (89, 234010), (178, 117005), (445, 46802), (623, 33430), (890, 23401), (1246, 16715), (3115, 6686), (3343, 6230)]