21738997

素因数分解:

$7^3\times {\mathrm{61}}^1\times {\mathrm{1039}}^1$

素因数の和:1121

約数の個数: 16

約数和(自身を含む): 25792000

約数和(自身を除く): 4053003

約数列:

[1, 7, 49, 61, 343, 427, 1039, 2989, 7273, 20923, 50911, 63379, 356377, 443653, 3105571, 21738997]

約数ペア:

[(1, 21738997), (7, 3105571), (49, 443653), (61, 356377), (343, 63379), (427, 50911), (1039, 20923), (2989, 7273)]