18981160

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{241}}^1$

素因数の和:442

約数の個数: 64

約数和(自身を含む): 47044800

約数和(自身を除く): 28063640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 179, 220, 241, 358, 440, 482, 716, 895, 964, 1205, 1432, 1790, 1928, 1969, 2410, 2651, 3580, 3938, 4820, 5302, 7160, 7876, 9640, 9845, 10604, 13255, 15752, 19690, 21208, 26510, 39380, 43139, 53020, 78760, 86278, 106040, 172556, 215695, 345112, 431390, 474529, 862780, 949058, 1725560, 1898116, 2372645, 3796232, 4745290, 9490580, 18981160]

約数ペア:

[(1, 18981160), (2, 9490580), (4, 4745290), (5, 3796232), (8, 2372645), (10, 1898116), (11, 1725560), (20, 949058), (22, 862780), (40, 474529), (44, 431390), (55, 345112), (88, 215695), (110, 172556), (179, 106040), (220, 86278), (241, 78760), (358, 53020), (440, 43139), (482, 39380), (716, 26510), (895, 21208), (964, 19690), (1205, 15752), (1432, 13255), (1790, 10604), (1928, 9845), (1969, 9640), (2410, 7876), (2651, 7160), (3580, 5302), (3938, 4820)]