211380561

素因数分解:

$3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:291

約数の個数: 72

約数和(自身を含む): 370903104

約数和(自身を除く): 159522543

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 71, 129, 147, 157, 213, 301, 387, 441, 471, 497, 639, 903, 1099, 1413, 1491, 2107, 2709, 3053, 3297, 3479, 4473, 6321, 6751, 7693, 9159, 9891, 10437, 11147, 18963, 20253, 21371, 23079, 27477, 31311, 33441, 47257, 60759, 64113, 69237, 78029, 100323, 141771, 149597, 192339, 234087, 330799, 425313, 448791, 479321, 546203, 702261, 992397, 1346373, 1437963, 1638609, 2977191, 3355247, 4313889, 4915827, 10065741, 23486729, 30197223, 70460187, 211380561]

約数ペア:

[(1, 211380561), (3, 70460187), (7, 30197223), (9, 23486729), (21, 10065741), (43, 4915827), (49, 4313889), (63, 3355247), (71, 2977191), (129, 1638609), (147, 1437963), (157, 1346373), (213, 992397), (301, 702261), (387, 546203), (441, 479321), (471, 448791), (497, 425313), (639, 330799), (903, 234087), (1099, 192339), (1413, 149597), (1491, 141771), (2107, 100323), (2709, 78029), (3053, 69237), (3297, 64113), (3479, 60759), (4473, 47257), (6321, 33441), (6751, 31311), (7693, 27477), (9159, 23079), (9891, 21371), (10437, 20253), (11147, 18963)]