21157554

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{173}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 49610880

約数和(自身を除く): 28453326

約数列:

[1, 2, 3, 6, 11, 17, 22, 33, 34, 51, 66, 102, 109, 173, 187, 218, 327, 346, 374, 519, 561, 654, 1038, 1122, 1199, 1853, 1903, 2398, 2941, 3597, 3706, 3806, 5559, 5709, 5882, 7194, 8823, 11118, 11418, 17646, 18857, 20383, 32351, 37714, 40766, 56571, 61149, 64702, 97053, 113142, 122298, 194106, 207427, 320569, 414854, 622281, 641138, 961707, 1244562, 1923414, 3526259, 7052518, 10578777, 21157554]

約数ペア:

[(1, 21157554), (2, 10578777), (3, 7052518), (6, 3526259), (11, 1923414), (17, 1244562), (22, 961707), (33, 641138), (34, 622281), (51, 414854), (66, 320569), (102, 207427), (109, 194106), (173, 122298), (187, 113142), (218, 97053), (327, 64702), (346, 61149), (374, 56571), (519, 40766), (561, 37714), (654, 32351), (1038, 20383), (1122, 18857), (1199, 17646), (1853, 11418), (1903, 11118), (2398, 8823), (2941, 7194), (3597, 5882), (3706, 5709), (3806, 5559)]