19908063

素因数分解:

$3^2\times 7^3\times {\mathrm{6449}}^1$

素因数の和:6476

約数の個数: 24

約数和(自身を含む): 33540000

約数和(自身を除く): 13631937

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 6449, 19347, 45143, 58041, 135429, 316001, 406287, 948003, 2212007, 2844009, 6636021, 19908063]

約数ペア:

[(1, 19908063), (3, 6636021), (7, 2844009), (9, 2212007), (21, 948003), (49, 406287), (63, 316001), (147, 135429), (343, 58041), (441, 45143), (1029, 19347), (3087, 6449)]