128422917

素因数分解:

$3^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{11783}}^1$

素因数の和:11969

約数の個数: 24

約数和(自身を含む): 213243264

約数和(自身を除く): 84820347

約数列:

[1, 3, 7, 9, 21, 63, 173, 519, 1211, 1557, 3633, 10899, 11783, 35349, 82481, 106047, 247443, 742329, 2038459, 6115377, 14269213, 18346131, 42807639, 128422917]

約数ペア:

[(1, 128422917), (3, 42807639), (7, 18346131), (9, 14269213), (21, 6115377), (63, 2038459), (173, 742329), (519, 247443), (1211, 106047), (1557, 82481), (3633, 35349), (10899, 11783)]