19904571

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2707}}^1$

素因数の和:2775

約数の個数: 24

約数和(自身を含む): 30979520

約数和(自身を除く): 11074949

約数列:

[1, 3, 9, 19, 43, 57, 129, 171, 387, 817, 2451, 2707, 7353, 8121, 24363, 51433, 116401, 154299, 349203, 462897, 1047609, 2211619, 6634857, 19904571]

約数ペア:

[(1, 19904571), (3, 6634857), (9, 2211619), (19, 1047609), (43, 462897), (57, 349203), (129, 154299), (171, 116401), (387, 51433), (817, 24363), (2451, 8121), (2707, 7353)]