20504907

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{14891}}^1$

素因数の和:14920

約数の個数: 20

約数和(自身を含む): 32434776

約数和(自身を除く): 11929869

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 14891, 44673, 134019, 253147, 402057, 759441, 1206171, 2278323, 6834969, 20504907]

約数ペア:

[(1, 20504907), (3, 6834969), (9, 2278323), (17, 1206171), (27, 759441), (51, 402057), (81, 253147), (153, 134019), (459, 44673), (1377, 14891)]