21581973

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{5113}}^1$

素因数の和:5193

約数の個数: 24

約数和(自身を含む): 36166208

約数和(自身を除く): 14584235

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 469, 603, 1407, 4221, 5113, 15339, 35791, 46017, 107373, 322119, 342571, 1027713, 2397997, 3083139, 7193991, 21581973]

約数ペア:

[(1, 21581973), (3, 7193991), (7, 3083139), (9, 2397997), (21, 1027713), (63, 342571), (67, 322119), (201, 107373), (469, 46017), (603, 35791), (1407, 15339), (4221, 5113)]