16995987

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:209

約数の個数: 40

約数和(自身を含む): 26815536

約数和(自身を除く): 9819549

約数列:

[1, 3, 9, 27, 37, 53, 81, 107, 111, 159, 321, 333, 477, 963, 999, 1431, 1961, 2889, 2997, 3959, 4293, 5671, 5883, 8667, 11877, 17013, 17649, 35631, 51039, 52947, 106893, 153117, 158841, 209827, 320679, 459351, 629481, 1888443, 5665329, 16995987]

約数ペア:

[(1, 16995987), (3, 5665329), (9, 1888443), (27, 629481), (37, 459351), (53, 320679), (81, 209827), (107, 158841), (111, 153117), (159, 106893), (321, 52947), (333, 51039), (477, 35631), (963, 17649), (999, 17013), (1431, 11877), (1961, 8667), (2889, 5883), (2997, 5671), (3959, 4293)]