19467440

素因数分解:

$2^4\times 5^1\times {\mathrm{243343}}^1$

素因数の和:243356

約数の個数: 20

約数和(自身を含む): 45261984

約数和(自身を除く): 25794544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 243343, 486686, 973372, 1216715, 1946744, 2433430, 3893488, 4866860, 9733720, 19467440]

約数ペア:

[(1, 19467440), (2, 9733720), (4, 4866860), (5, 3893488), (8, 2433430), (10, 1946744), (16, 1216715), (20, 973372), (40, 486686), (80, 243343)]