21479517

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 35043840

約数和(自身を除く): 13564323

約数列:

[1, 3, 9, 17, 29, 47, 51, 87, 103, 141, 153, 261, 309, 423, 493, 799, 927, 1363, 1479, 1751, 2397, 2987, 4089, 4437, 4841, 5253, 7191, 8961, 12267, 14523, 15759, 23171, 26883, 43569, 50779, 69513, 82297, 140389, 152337, 208539, 246891, 421167, 457011, 740673, 1263501, 2386613, 7159839, 21479517]

約数ペア:

[(1, 21479517), (3, 7159839), (9, 2386613), (17, 1263501), (29, 740673), (47, 457011), (51, 421167), (87, 246891), (103, 208539), (141, 152337), (153, 140389), (261, 82297), (309, 69513), (423, 50779), (493, 43569), (799, 26883), (927, 23171), (1363, 15759), (1479, 14523), (1751, 12267), (2397, 8961), (2987, 7191), (4089, 5253), (4437, 4841)]