21680864

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{383}}^1$

素因数の和:483

約数の個数: 48

約数和(自身を含む): 44997120

約数和(自身を除く): 23316256

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 61, 116, 122, 232, 244, 383, 464, 488, 766, 928, 976, 1532, 1769, 1952, 3064, 3538, 6128, 7076, 11107, 12256, 14152, 22214, 23363, 28304, 44428, 46726, 56608, 88856, 93452, 177712, 186904, 355424, 373808, 677527, 747616, 1355054, 2710108, 5420216, 10840432, 21680864]

約数ペア:

[(1, 21680864), (2, 10840432), (4, 5420216), (8, 2710108), (16, 1355054), (29, 747616), (32, 677527), (58, 373808), (61, 355424), (116, 186904), (122, 177712), (232, 93452), (244, 88856), (383, 56608), (464, 46726), (488, 44428), (766, 28304), (928, 23363), (976, 22214), (1532, 14152), (1769, 12256), (1952, 11107), (3064, 7076), (3538, 6128)]