19708405

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{2957}}^1$

素因数の和:3036

約数の個数: 16

約数和(自身を含む): 24989184

約数和(自身を除く): 5280779

約数列:

[1, 5, 31, 43, 155, 215, 1333, 2957, 6665, 14785, 91667, 127151, 458335, 635755, 3941681, 19708405]

約数ペア:

[(1, 19708405), (5, 3941681), (31, 635755), (43, 458335), (155, 127151), (215, 91667), (1333, 14785), (2957, 6665)]