20581184

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{853}}^1$

素因数の和:907

約数の個数: 56

約数和(自身を含む): 45552360

約数和(自身を除く): 24971176

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 32, 52, 58, 64, 104, 116, 208, 232, 377, 416, 464, 754, 832, 853, 928, 1508, 1706, 1856, 3016, 3412, 6032, 6824, 11089, 12064, 13648, 22178, 24128, 24737, 27296, 44356, 49474, 54592, 88712, 98948, 177424, 197896, 321581, 354848, 395792, 643162, 709696, 791584, 1286324, 1583168, 2572648, 5145296, 10290592, 20581184]

約数ペア:

[(1, 20581184), (2, 10290592), (4, 5145296), (8, 2572648), (13, 1583168), (16, 1286324), (26, 791584), (29, 709696), (32, 643162), (52, 395792), (58, 354848), (64, 321581), (104, 197896), (116, 177424), (208, 98948), (232, 88712), (377, 54592), (416, 49474), (464, 44356), (754, 27296), (832, 24737), (853, 24128), (928, 22178), (1508, 13648), (1706, 12064), (1856, 11089), (3016, 6824), (3412, 6032)]