20199709971

素因数分解:

$3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{1065217}}^1$

素因数の和:1065280

約数の個数: 36

約数和(自身を含む): 34730367672

約数和(自身を除く): 14530657701

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 301, 387, 441, 903, 2107, 2709, 6321, 18963, 1065217, 3195651, 7456519, 9586953, 22369557, 45804331, 52195633, 67108671, 137412993, 156586899, 320630317, 412238979, 469760697, 961890951, 2244412219, 2885672853, 6733236657, 20199709971]

約数ペア:

[(1, 20199709971), (3, 6733236657), (7, 2885672853), (9, 2244412219), (21, 961890951), (43, 469760697), (49, 412238979), (63, 320630317), (129, 156586899), (147, 137412993), (301, 67108671), (387, 52195633), (441, 45804331), (903, 22369557), (2107, 9586953), (2709, 7456519), (6321, 3195651), (18963, 1065217)]