21276656

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1$

素因数の和:246

約数の個数: 80

約数和(自身を含む): 48211200

約数和(自身を除く): 26934544

約数列:

[1, 2, 4, 8, 16, 17, 19, 23, 34, 38, 46, 68, 76, 92, 136, 152, 179, 184, 272, 304, 323, 358, 368, 391, 437, 646, 716, 782, 874, 1292, 1432, 1564, 1748, 2584, 2864, 3043, 3128, 3401, 3496, 4117, 5168, 6086, 6256, 6802, 6992, 7429, 8234, 12172, 13604, 14858, 16468, 24344, 27208, 29716, 32936, 48688, 54416, 57817, 59432, 65872, 69989, 78223, 115634, 118864, 139978, 156446, 231268, 279956, 312892, 462536, 559912, 625784, 925072, 1119824, 1251568, 1329791, 2659582, 5319164, 10638328, 21276656]

約数ペア:

[(1, 21276656), (2, 10638328), (4, 5319164), (8, 2659582), (16, 1329791), (17, 1251568), (19, 1119824), (23, 925072), (34, 625784), (38, 559912), (46, 462536), (68, 312892), (76, 279956), (92, 231268), (136, 156446), (152, 139978), (179, 118864), (184, 115634), (272, 78223), (304, 69989), (323, 65872), (358, 59432), (368, 57817), (391, 54416), (437, 48688), (646, 32936), (716, 29716), (782, 27208), (874, 24344), (1292, 16468), (1432, 14858), (1564, 13604), (1748, 12172), (2584, 8234), (2864, 7429), (3043, 6992), (3128, 6802), (3401, 6256), (3496, 6086), (4117, 5168)]