21000604779

素因数分解:

$3^3\times 7^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{8963}}^1$

素因数の和:9027

約数の個数: 128

約数和(自身を含む): 41306112000

約数和(自身を除く): 20305507221

約数列:

[1, 3, 7, 9, 11, 21, 23, 27, 33, 49, 63, 69, 77, 99, 147, 161, 189, 207, 231, 253, 297, 343, 441, 483, 539, 621, 693, 759, 1029, 1127, 1323, 1449, 1617, 1771, 2079, 2277, 3087, 3381, 3773, 4347, 4851, 5313, 6831, 7889, 8963, 9261, 10143, 11319, 12397, 14553, 15939, 23667, 26889, 30429, 33957, 37191, 47817, 62741, 71001, 80667, 86779, 98593, 101871, 111573, 188223, 206149, 213003, 242001, 260337, 295779, 334719, 439187, 564669, 618447, 690151, 781011, 887337, 1317561, 1443043, 1694007, 1855341, 2070453, 2267639, 2343033, 2662011, 3074309, 3952683, 4329129, 4831057, 5566023, 6211359, 6802917, 9222927, 10101301, 11858049, 12987387, 14493171, 15873473, 18634077, 20408751, 27668781, 30303903, 33817399, 38962161, 43479513, 47620419, 61226253, 70709107, 83006343, 90911709, 101452197, 111114311, 130438539, 142861257, 212127321, 272735127, 304356591, 333342933, 428583771, 636381963, 777800177, 913069773, 1000028799, 1909145889, 2333400531, 3000086397, 7000201593, 21000604779]

約数ペア:

[(1, 21000604779), (3, 7000201593), (7, 3000086397), (9, 2333400531), (11, 1909145889), (21, 1000028799), (23, 913069773), (27, 777800177), (33, 636381963), (49, 428583771), (63, 333342933), (69, 304356591), (77, 272735127), (99, 212127321), (147, 142861257), (161, 130438539), (189, 111114311), (207, 101452197), (231, 90911709), (253, 83006343), (297, 70709107), (343, 61226253), (441, 47620419), (483, 43479513), (539, 38962161), (621, 33817399), (693, 30303903), (759, 27668781), (1029, 20408751), (1127, 18634077), (1323, 15873473), (1449, 14493171), (1617, 12987387), (1771, 11858049), (2079, 10101301), (2277, 9222927), (3087, 6802917), (3381, 6211359), (3773, 5566023), (4347, 4831057), (4851, 4329129), (5313, 3952683), (6831, 3074309), (7889, 2662011), (8963, 2343033), (9261, 2267639), (10143, 2070453), (11319, 1855341), (12397, 1694007), (14553, 1443043), (15939, 1317561), (23667, 887337), (26889, 781011), (30429, 690151), (33957, 618447), (37191, 564669), (47817, 439187), (62741, 334719), (71001, 295779), (80667, 260337), (86779, 242001), (98593, 213003), (101871, 206149), (111573, 188223)]