21173710

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{337}}^1$

素因数の和:508

約数の個数: 32

約数和(自身を含む): 39229632

約数和(自身を除く): 18055922

約数列:

[1, 2, 5, 10, 61, 103, 122, 206, 305, 337, 515, 610, 674, 1030, 1685, 3370, 6283, 12566, 20557, 31415, 34711, 41114, 62830, 69422, 102785, 173555, 205570, 347110, 2117371, 4234742, 10586855, 21173710]

約数ペア:

[(1, 21173710), (2, 10586855), (5, 4234742), (10, 2117371), (61, 347110), (103, 205570), (122, 173555), (206, 102785), (305, 69422), (337, 62830), (515, 41114), (610, 34711), (674, 31415), (1030, 20557), (1685, 12566), (3370, 6283)]