21994731

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 36840960

約数和(自身を除く): 14846229

約数列:

[1, 3, 9, 11, 29, 33, 47, 87, 99, 141, 163, 261, 319, 423, 489, 517, 957, 1363, 1467, 1551, 1793, 2871, 4089, 4653, 4727, 5379, 7661, 12267, 14181, 14993, 16137, 22983, 42543, 44979, 51997, 68949, 84271, 134937, 155991, 222169, 252813, 467973, 666507, 758439, 1999521, 2443859, 7331577, 21994731]

約数ペア:

[(1, 21994731), (3, 7331577), (9, 2443859), (11, 1999521), (29, 758439), (33, 666507), (47, 467973), (87, 252813), (99, 222169), (141, 155991), (163, 134937), (261, 84271), (319, 68949), (423, 51997), (489, 44979), (517, 42543), (957, 22983), (1363, 16137), (1467, 14993), (1551, 14181), (1793, 12267), (2871, 7661), (4089, 5379), (4653, 4727)]