21310556

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{131}}^1\times {\mathrm{607}}^1$

素因数の和:809

約数の個数: 24

約数和(自身を含む): 38201856

約数和(自身を除く): 16891300

約数列:

[1, 2, 4, 67, 131, 134, 262, 268, 524, 607, 1214, 2428, 8777, 17554, 35108, 40669, 79517, 81338, 159034, 162676, 318068, 5327639, 10655278, 21310556]

約数ペア:

[(1, 21310556), (2, 10655278), (4, 5327639), (67, 318068), (131, 162676), (134, 159034), (262, 81338), (268, 79517), (524, 40669), (607, 35108), (1214, 17554), (2428, 8777)]