21280184

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{61861}}^1$

素因数の和:61910

約数の個数: 16

約数和(自身を含む): 40828920

約数和(自身を除く): 19548736

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 61861, 123722, 247444, 494888, 2660023, 5320046, 10640092, 21280184]

約数ペア:

[(1, 21280184), (2, 10640092), (4, 5320046), (8, 2660023), (43, 494888), (86, 247444), (172, 123722), (344, 61861)]