21265552

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{421}}^1$

素因数の和:488

約数の個数: 80

約数和(自身を含む): 52746624

約数和(自身を除く): 31481072

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 41, 44, 56, 77, 82, 88, 112, 154, 164, 176, 287, 308, 328, 421, 451, 574, 616, 656, 842, 902, 1148, 1232, 1684, 1804, 2296, 2947, 3157, 3368, 3608, 4592, 4631, 5894, 6314, 6736, 7216, 9262, 11788, 12628, 17261, 18524, 23576, 25256, 32417, 34522, 37048, 47152, 50512, 64834, 69044, 74096, 120827, 129668, 138088, 189871, 241654, 259336, 276176, 379742, 483308, 518672, 759484, 966616, 1329097, 1518968, 1933232, 2658194, 3037936, 5316388, 10632776, 21265552]

約数ペア:

[(1, 21265552), (2, 10632776), (4, 5316388), (7, 3037936), (8, 2658194), (11, 1933232), (14, 1518968), (16, 1329097), (22, 966616), (28, 759484), (41, 518672), (44, 483308), (56, 379742), (77, 276176), (82, 259336), (88, 241654), (112, 189871), (154, 138088), (164, 129668), (176, 120827), (287, 74096), (308, 69044), (328, 64834), (421, 50512), (451, 47152), (574, 37048), (616, 34522), (656, 32417), (842, 25256), (902, 23576), (1148, 18524), (1232, 17261), (1684, 12628), (1804, 11788), (2296, 9262), (2947, 7216), (3157, 6736), (3368, 6314), (3608, 5894), (4592, 4631)]