18127840

素因数分解:

$2^5\times 5^1\times {\mathrm{137}}^1\times {\mathrm{827}}^1$

素因数の和:979

約数の個数: 48

約数和(自身を含む): 43191792

約数和(自身を除く): 25063952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 137, 160, 274, 548, 685, 827, 1096, 1370, 1654, 2192, 2740, 3308, 4135, 4384, 5480, 6616, 8270, 10960, 13232, 16540, 21920, 26464, 33080, 66160, 113299, 132320, 226598, 453196, 566495, 906392, 1132990, 1812784, 2265980, 3625568, 4531960, 9063920, 18127840]

約数ペア:

[(1, 18127840), (2, 9063920), (4, 4531960), (5, 3625568), (8, 2265980), (10, 1812784), (16, 1132990), (20, 906392), (32, 566495), (40, 453196), (80, 226598), (137, 132320), (160, 113299), (274, 66160), (548, 33080), (685, 26464), (827, 21920), (1096, 16540), (1370, 13232), (1654, 10960), (2192, 8270), (2740, 6616), (3308, 5480), (4135, 4384)]