20826207

素因数分解:

$3^3\times {\mathrm{17}}^3\times {\mathrm{157}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 32990400

約数和(自身を除く): 12164193

約数列:

[1, 3, 9, 17, 27, 51, 153, 157, 289, 459, 471, 867, 1413, 2601, 2669, 4239, 4913, 7803, 8007, 14739, 24021, 44217, 45373, 72063, 132651, 136119, 408357, 771341, 1225071, 2314023, 6942069, 20826207]

約数ペア:

[(1, 20826207), (3, 6942069), (9, 2314023), (17, 1225071), (27, 771341), (51, 408357), (153, 136119), (157, 132651), (289, 72063), (459, 45373), (471, 44217), (867, 24021), (1413, 14739), (2601, 8007), (2669, 7803), (4239, 4913)]