19824469

素因数分解:

$7^2\times {\mathrm{31}}^2\times {\mathrm{421}}^1$

素因数の和:497

約数の個数: 18

約数和(自身を含む): 23885622

約数和(自身を除く): 4061153

約数列:

[1, 7, 31, 49, 217, 421, 961, 1519, 2947, 6727, 13051, 20629, 47089, 91357, 404581, 639499, 2832067, 19824469]

約数ペア:

[(1, 19824469), (7, 2832067), (31, 639499), (49, 404581), (217, 91357), (421, 47089), (961, 20629), (1519, 13051), (2947, 6727)]