19994091

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{569}}^1$

素因数の和:655

約数の個数: 32

約数和(自身を含む): 31026240

約数和(自身を除く): 11032149

約数列:

[1, 3, 13, 17, 39, 51, 53, 159, 221, 569, 663, 689, 901, 1707, 2067, 2703, 7397, 9673, 11713, 22191, 29019, 30157, 35139, 90471, 125749, 377247, 392041, 512669, 1176123, 1538007, 6664697, 19994091]

約数ペア:

[(1, 19994091), (3, 6664697), (13, 1538007), (17, 1176123), (39, 512669), (51, 392041), (53, 377247), (159, 125749), (221, 90471), (569, 35139), (663, 30157), (689, 29019), (901, 22191), (1707, 11713), (2067, 9673), (2703, 7397)]