21289168

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1$

素因数の和:172

約数の個数: 80

約数和(自身を含む): 47246976

約数和(自身を除く): 25957808

約数列:

[1, 2, 4, 8, 16, 17, 23, 34, 41, 46, 68, 82, 83, 92, 136, 164, 166, 184, 272, 328, 332, 368, 391, 656, 664, 697, 782, 943, 1328, 1394, 1411, 1564, 1886, 1909, 2788, 2822, 3128, 3403, 3772, 3818, 5576, 5644, 6256, 6806, 7544, 7636, 11152, 11288, 13612, 15088, 15272, 16031, 22576, 27224, 30544, 32062, 32453, 54448, 57851, 64124, 64906, 78269, 115702, 128248, 129812, 156538, 231404, 256496, 259624, 313076, 462808, 519248, 626152, 925616, 1252304, 1330573, 2661146, 5322292, 10644584, 21289168]

約数ペア:

[(1, 21289168), (2, 10644584), (4, 5322292), (8, 2661146), (16, 1330573), (17, 1252304), (23, 925616), (34, 626152), (41, 519248), (46, 462808), (68, 313076), (82, 259624), (83, 256496), (92, 231404), (136, 156538), (164, 129812), (166, 128248), (184, 115702), (272, 78269), (328, 64906), (332, 64124), (368, 57851), (391, 54448), (656, 32453), (664, 32062), (697, 30544), (782, 27224), (943, 22576), (1328, 16031), (1394, 15272), (1411, 15088), (1564, 13612), (1886, 11288), (1909, 11152), (2788, 7636), (2822, 7544), (3128, 6806), (3403, 6256), (3772, 5644), (3818, 5576)]