21533589

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1$

素因数の和:247

約数の個数: 72

約数和(自身を含む): 41401152

約数和(自身を除く): 19867563

約数列:

[1, 3, 7, 9, 11, 21, 23, 33, 49, 63, 69, 77, 99, 147, 161, 193, 207, 231, 253, 441, 483, 539, 579, 693, 759, 1127, 1351, 1449, 1617, 1737, 1771, 2123, 2277, 3381, 4053, 4439, 4851, 5313, 6369, 9457, 10143, 12159, 12397, 13317, 14861, 15939, 19107, 28371, 31073, 37191, 39951, 44583, 48829, 85113, 93219, 104027, 111573, 133749, 146487, 217511, 279657, 312081, 341803, 439461, 652533, 936243, 1025409, 1957599, 2392621, 3076227, 7177863, 21533589]

約数ペア:

[(1, 21533589), (3, 7177863), (7, 3076227), (9, 2392621), (11, 1957599), (21, 1025409), (23, 936243), (33, 652533), (49, 439461), (63, 341803), (69, 312081), (77, 279657), (99, 217511), (147, 146487), (161, 133749), (193, 111573), (207, 104027), (231, 93219), (253, 85113), (441, 48829), (483, 44583), (539, 39951), (579, 37191), (693, 31073), (759, 28371), (1127, 19107), (1351, 15939), (1449, 14861), (1617, 13317), (1737, 12397), (1771, 12159), (2123, 10143), (2277, 9457), (3381, 6369), (4053, 5313), (4439, 4851)]