20495488

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 44767800

約数和(自身を除く): 24272312

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 109, 113, 128, 208, 218, 226, 416, 436, 452, 832, 872, 904, 1417, 1469, 1664, 1744, 1808, 2834, 2938, 3488, 3616, 5668, 5876, 6976, 7232, 11336, 11752, 12317, 13952, 14464, 22672, 23504, 24634, 45344, 47008, 49268, 90688, 94016, 98536, 160121, 181376, 188032, 197072, 320242, 394144, 640484, 788288, 1280968, 1576576, 2561936, 5123872, 10247744, 20495488]

約数ペア:

[(1, 20495488), (2, 10247744), (4, 5123872), (8, 2561936), (13, 1576576), (16, 1280968), (26, 788288), (32, 640484), (52, 394144), (64, 320242), (104, 197072), (109, 188032), (113, 181376), (128, 160121), (208, 98536), (218, 94016), (226, 90688), (416, 49268), (436, 47008), (452, 45344), (832, 24634), (872, 23504), (904, 22672), (1417, 14464), (1469, 13952), (1664, 12317), (1744, 11752), (1808, 11336), (2834, 7232), (2938, 6976), (3488, 5876), (3616, 5668)]