18800540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{881}}^1$

素因数の和:998

約数の個数: 48

約数和(自身を含む): 43563744

約数和(自身を除く): 24763204

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 97, 110, 194, 220, 388, 485, 881, 970, 1067, 1762, 1940, 2134, 3524, 4268, 4405, 5335, 8810, 9691, 10670, 17620, 19382, 21340, 38764, 48455, 85457, 96910, 170914, 193820, 341828, 427285, 854570, 940027, 1709140, 1880054, 3760108, 4700135, 9400270, 18800540]

約数ペア:

[(1, 18800540), (2, 9400270), (4, 4700135), (5, 3760108), (10, 1880054), (11, 1709140), (20, 940027), (22, 854570), (44, 427285), (55, 341828), (97, 193820), (110, 170914), (194, 96910), (220, 85457), (388, 48455), (485, 38764), (881, 21340), (970, 19382), (1067, 17620), (1762, 10670), (1940, 9691), (2134, 8810), (3524, 5335), (4268, 4405)]