21099694

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{37}}^1$

素因数の和:110

約数の個数: 72

約数和(自身を含む): 43120728

約数和(自身を除く): 22021034

約数列:

[1, 2, 7, 11, 14, 22, 23, 37, 46, 49, 74, 77, 98, 154, 161, 253, 259, 322, 407, 506, 518, 529, 539, 814, 851, 1058, 1078, 1127, 1702, 1771, 1813, 2254, 2849, 3542, 3626, 3703, 5698, 5819, 5957, 7406, 9361, 11638, 11914, 12397, 18722, 19573, 19943, 24794, 25921, 39146, 39886, 40733, 41699, 51842, 65527, 81466, 83398, 131054, 137011, 215303, 274022, 285131, 430606, 458689, 570262, 917378, 959077, 1507121, 1918154, 3014242, 10549847, 21099694]

約数ペア:

[(1, 21099694), (2, 10549847), (7, 3014242), (11, 1918154), (14, 1507121), (22, 959077), (23, 917378), (37, 570262), (46, 458689), (49, 430606), (74, 285131), (77, 274022), (98, 215303), (154, 137011), (161, 131054), (253, 83398), (259, 81466), (322, 65527), (407, 51842), (506, 41699), (518, 40733), (529, 39886), (539, 39146), (814, 25921), (851, 24794), (1058, 19943), (1078, 19573), (1127, 18722), (1702, 12397), (1771, 11914), (1813, 11638), (2254, 9361), (2849, 7406), (3542, 5957), (3626, 5819), (3703, 5698)]