18139221

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{4391}}^1$

素因数の和:4423

約数の個数: 24

約数和(自身を含む): 28776384

約数和(自身を除く): 10637163

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 243, 459, 1377, 4131, 4391, 13173, 39519, 74647, 118557, 223941, 355671, 671823, 1067013, 2015469, 6046407, 18139221]

約数ペア:

[(1, 18139221), (3, 6046407), (9, 2015469), (17, 1067013), (27, 671823), (51, 355671), (81, 223941), (153, 118557), (243, 74647), (459, 39519), (1377, 13173), (4131, 4391)]