20139849

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{947}}^1$

素因数の和:1109

約数の個数: 24

約数和(自身を含む): 31056480

約数和(自身を除く): 10916631

約数列:

[1, 3, 9, 17, 51, 139, 153, 417, 947, 1251, 2363, 2841, 7089, 8523, 16099, 21267, 48297, 131633, 144891, 394899, 1184697, 2237761, 6713283, 20139849]

約数ペア:

[(1, 20139849), (3, 6713283), (9, 2237761), (17, 1184697), (51, 394899), (139, 144891), (153, 131633), (417, 48297), (947, 21267), (1251, 16099), (2363, 8523), (2841, 7089)]