199712128

素因数分解:

$2^7\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{881}}^1$

素因数の和:936

約数の個数: 128

約数和(自身を含む): 518192640

約数和(自身を除く): 318480512

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 23, 28, 32, 44, 46, 56, 64, 77, 88, 92, 112, 128, 154, 161, 176, 184, 224, 253, 308, 322, 352, 368, 448, 506, 616, 644, 704, 736, 881, 896, 1012, 1232, 1288, 1408, 1472, 1762, 1771, 2024, 2464, 2576, 2944, 3524, 3542, 4048, 4928, 5152, 6167, 7048, 7084, 8096, 9691, 9856, 10304, 12334, 14096, 14168, 16192, 19382, 20263, 20608, 24668, 28192, 28336, 32384, 38764, 40526, 49336, 56384, 56672, 67837, 77528, 81052, 98672, 112768, 113344, 135674, 141841, 155056, 162104, 197344, 222893, 226688, 271348, 283682, 310112, 324208, 394688, 445786, 542696, 567364, 620224, 648416, 789376, 891572, 1085392, 1134728, 1240448, 1296832, 1560251, 1783144, 2170784, 2269456, 2593664, 3120502, 3566288, 4341568, 4538912, 6241004, 7132576, 8683136, 9077824, 12482008, 14265152, 18155648, 24964016, 28530304, 49928032, 99856064, 199712128]

約数ペア:

[(1, 199712128), (2, 99856064), (4, 49928032), (7, 28530304), (8, 24964016), (11, 18155648), (14, 14265152), (16, 12482008), (22, 9077824), (23, 8683136), (28, 7132576), (32, 6241004), (44, 4538912), (46, 4341568), (56, 3566288), (64, 3120502), (77, 2593664), (88, 2269456), (92, 2170784), (112, 1783144), (128, 1560251), (154, 1296832), (161, 1240448), (176, 1134728), (184, 1085392), (224, 891572), (253, 789376), (308, 648416), (322, 620224), (352, 567364), (368, 542696), (448, 445786), (506, 394688), (616, 324208), (644, 310112), (704, 283682), (736, 271348), (881, 226688), (896, 222893), (1012, 197344), (1232, 162104), (1288, 155056), (1408, 141841), (1472, 135674), (1762, 113344), (1771, 112768), (2024, 98672), (2464, 81052), (2576, 77528), (2944, 67837), (3524, 56672), (3542, 56384), (4048, 49336), (4928, 40526), (5152, 38764), (6167, 32384), (7048, 28336), (7084, 28192), (8096, 24668), (9691, 20608), (9856, 20263), (10304, 19382), (12334, 16192), (14096, 14168)]