16640656

素因数分解:

$2^4\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:156

約数の個数: 60

約数和(自身を含む): 35338512

約数和(自身を除く): 18697856

約数列:

[1, 2, 4, 8, 16, 19, 38, 43, 67, 76, 86, 134, 152, 172, 268, 304, 344, 361, 536, 688, 722, 817, 1072, 1273, 1444, 1634, 2546, 2881, 2888, 3268, 5092, 5762, 5776, 6536, 10184, 11524, 13072, 15523, 20368, 23048, 24187, 31046, 46096, 48374, 54739, 62092, 96748, 109478, 124184, 193496, 218956, 248368, 386992, 437912, 875824, 1040041, 2080082, 4160164, 8320328, 16640656]

約数ペア:

[(1, 16640656), (2, 8320328), (4, 4160164), (8, 2080082), (16, 1040041), (19, 875824), (38, 437912), (43, 386992), (67, 248368), (76, 218956), (86, 193496), (134, 124184), (152, 109478), (172, 96748), (268, 62092), (304, 54739), (344, 48374), (361, 46096), (536, 31046), (688, 24187), (722, 23048), (817, 20368), (1072, 15523), (1273, 13072), (1444, 11524), (1634, 10184), (2546, 6536), (2881, 5776), (2888, 5762), (3268, 5092)]