81287913

素因数分解:

$3^1\times 7^3\times {\mathrm{197}}^1\times {\mathrm{401}}^1$

素因数の和:622

約数の個数: 32

約数和(自身を含む): 127353600

約数和(自身を除く): 46065687

約数列:

[1, 3, 7, 21, 49, 147, 197, 343, 401, 591, 1029, 1203, 1379, 2807, 4137, 8421, 9653, 19649, 28959, 58947, 67571, 78997, 137543, 202713, 236991, 412629, 552979, 1658937, 3870853, 11612559, 27095971, 81287913]

約数ペア:

[(1, 81287913), (3, 27095971), (7, 11612559), (21, 3870853), (49, 1658937), (147, 552979), (197, 412629), (343, 236991), (401, 202713), (591, 137543), (1029, 78997), (1203, 67571), (1379, 58947), (2807, 28959), (4137, 19649), (8421, 9653)]