643989495

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{9319}}^1$

素因数の和:9615

約数の個数: 32

約数和(自身を含む): 1095137280

約数和(自身を除く): 451147785

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 271, 813, 1355, 4065, 4607, 9319, 13821, 23035, 27957, 46595, 69105, 139785, 158423, 475269, 792115, 2376345, 2525449, 7576347, 12627245, 37881735, 42932633, 128797899, 214663165, 643989495]

約数ペア:

[(1, 643989495), (3, 214663165), (5, 128797899), (15, 42932633), (17, 37881735), (51, 12627245), (85, 7576347), (255, 2525449), (271, 2376345), (813, 792115), (1355, 475269), (4065, 158423), (4607, 139785), (9319, 69105), (13821, 46595), (23035, 27957)]