19691973

素因数分解:

$3^2\times 7^3\times {\mathrm{6379}}^1$

素因数の和:6406

約数の個数: 24

約数和(自身を含む): 33176000

約数和(自身を除く): 13484027

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 6379, 19137, 44653, 57411, 133959, 312571, 401877, 937713, 2187997, 2813139, 6563991, 19691973]

約数ペア:

[(1, 19691973), (3, 6563991), (7, 2813139), (9, 2187997), (21, 937713), (49, 401877), (63, 312571), (147, 133959), (343, 57411), (441, 44653), (1029, 19137), (3087, 6379)]