20474919

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{821}}^1$

素因数の和:1007

約数の個数: 24

約数和(自身を含む): 31545072

約数和(自身を除く): 11070153

約数列:

[1, 3, 9, 17, 51, 153, 163, 489, 821, 1467, 2463, 2771, 7389, 8313, 13957, 24939, 41871, 125613, 133823, 401469, 1204407, 2274991, 6824973, 20474919]

約数ペア:

[(1, 20474919), (3, 6824973), (9, 2274991), (17, 1204407), (51, 401469), (153, 133823), (163, 125613), (489, 41871), (821, 24939), (1467, 13957), (2463, 8313), (2771, 7389)]