21992991

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^2\times {\mathrm{379}}^1$

素因数の和:463

約数の個数: 24

約数和(自身を含む): 31774080

約数和(自身を除く): 9781089

約数列:

[1, 3, 23, 29, 69, 87, 379, 667, 841, 1137, 2001, 2523, 8717, 10991, 19343, 26151, 32973, 58029, 252793, 318739, 758379, 956217, 7330997, 21992991]

約数ペア:

[(1, 21992991), (3, 7330997), (23, 956217), (29, 758379), (69, 318739), (87, 252793), (379, 58029), (667, 32973), (841, 26151), (1137, 19343), (2001, 10991), (2523, 8717)]