21281016

素因数分解:

$2^3\times 3^1\times {\mathrm{107}}^1\times {\mathrm{8287}}^1$

素因数の和:8403

約数の個数: 32

約数和(自身を含む): 53706240

約数和(自身を除く): 32425224

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 107, 214, 321, 428, 642, 856, 1284, 2568, 8287, 16574, 24861, 33148, 49722, 66296, 99444, 198888, 886709, 1773418, 2660127, 3546836, 5320254, 7093672, 10640508, 21281016]

約数ペア:

[(1, 21281016), (2, 10640508), (3, 7093672), (4, 5320254), (6, 3546836), (8, 2660127), (12, 1773418), (24, 886709), (107, 198888), (214, 99444), (321, 66296), (428, 49722), (642, 33148), (856, 24861), (1284, 16574), (2568, 8287)]