21200704

素因数分解:

$2^6\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1279}}^1$

素因数の和:1335

約数の個数: 56

約数和(自身を含む): 49418240

約数和(自身を除く): 28217536

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 37, 56, 64, 74, 112, 148, 224, 259, 296, 448, 518, 592, 1036, 1184, 1279, 2072, 2368, 2558, 4144, 5116, 8288, 8953, 10232, 16576, 17906, 20464, 35812, 40928, 47323, 71624, 81856, 94646, 143248, 189292, 286496, 331261, 378584, 572992, 662522, 757168, 1325044, 1514336, 2650088, 3028672, 5300176, 10600352, 21200704]

約数ペア:

[(1, 21200704), (2, 10600352), (4, 5300176), (7, 3028672), (8, 2650088), (14, 1514336), (16, 1325044), (28, 757168), (32, 662522), (37, 572992), (56, 378584), (64, 331261), (74, 286496), (112, 189292), (148, 143248), (224, 94646), (259, 81856), (296, 71624), (448, 47323), (518, 40928), (592, 35812), (1036, 20464), (1184, 17906), (1279, 16576), (2072, 10232), (2368, 8953), (2558, 8288), (4144, 5116)]