21039616

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1$

素因数の和:169

約数の個数: 80

約数和(自身を含む): 47262600

約数和(自身を除く): 26222984

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 32, 52, 58, 64, 104, 109, 116, 128, 208, 218, 232, 256, 377, 416, 436, 464, 512, 754, 832, 872, 928, 1417, 1508, 1664, 1744, 1856, 2834, 3016, 3161, 3328, 3488, 3712, 5668, 6032, 6322, 6656, 6976, 7424, 11336, 12064, 12644, 13952, 14848, 22672, 24128, 25288, 27904, 41093, 45344, 48256, 50576, 55808, 82186, 90688, 96512, 101152, 164372, 181376, 193024, 202304, 328744, 362752, 404608, 657488, 725504, 809216, 1314976, 1618432, 2629952, 5259904, 10519808, 21039616]

約数ペア:

[(1, 21039616), (2, 10519808), (4, 5259904), (8, 2629952), (13, 1618432), (16, 1314976), (26, 809216), (29, 725504), (32, 657488), (52, 404608), (58, 362752), (64, 328744), (104, 202304), (109, 193024), (116, 181376), (128, 164372), (208, 101152), (218, 96512), (232, 90688), (256, 82186), (377, 55808), (416, 50576), (436, 48256), (464, 45344), (512, 41093), (754, 27904), (832, 25288), (872, 24128), (928, 22672), (1417, 14848), (1508, 13952), (1664, 12644), (1744, 12064), (1856, 11336), (2834, 7424), (3016, 6976), (3161, 6656), (3328, 6322), (3488, 6032), (3712, 5668)]