2813139

素因数分解:

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

素因数の和:6399

約数の個数: 18

約数和(自身を含む): 4727580

約数和(自身を除く): 1914441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 6379, 19137, 44653, 57411, 133959, 312571, 401877, 937713, 2813139]

約数ペア:

[(1, 2813139), (3, 937713), (7, 401877), (9, 312571), (21, 133959), (49, 57411), (63, 44653), (147, 19137), (441, 6379)]