213211971

素因数分解:

$3^2\times 7^1\times {\mathrm{571}}^1\times {\mathrm{5927}}^1$

素因数の和:6511

約数の個数: 24

約数和(自身を含む): 352644864

約数和(自身を除く): 139432893

約数列:

[1, 3, 7, 9, 21, 63, 571, 1713, 3997, 5139, 5927, 11991, 17781, 35973, 41489, 53343, 124467, 373401, 3384317, 10152951, 23690219, 30458853, 71070657, 213211971]

約数ペア:

[(1, 213211971), (3, 71070657), (7, 30458853), (9, 23690219), (21, 10152951), (63, 3384317), (571, 373401), (1713, 124467), (3997, 53343), (5139, 41489), (5927, 35973), (11991, 17781)]