161720889

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{3001}}^1$

素因数の和:3109

約数の個数: 32

約数和(自身を含む): 248997888

約数和(自身を除く): 87276999

約数列:

[1, 3, 11, 23, 33, 69, 71, 213, 253, 759, 781, 1633, 2343, 3001, 4899, 9003, 17963, 33011, 53889, 69023, 99033, 207069, 213071, 639213, 759253, 2277759, 2343781, 4900633, 7031343, 14701899, 53906963, 161720889]

約数ペア:

[(1, 161720889), (3, 53906963), (11, 14701899), (23, 7031343), (33, 4900633), (69, 2343781), (71, 2277759), (213, 759253), (253, 639213), (759, 213071), (781, 207069), (1633, 99033), (2343, 69023), (3001, 53889), (4899, 33011), (9003, 17963)]