28505556

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{199}}^1$

素因数の和:405

約数の個数: 72

約数和(自身を含む): 76003200

約数和(自身を除く): 47497644

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 92, 138, 173, 199, 207, 276, 346, 398, 414, 519, 597, 692, 796, 828, 1038, 1194, 1557, 1791, 2076, 2388, 3114, 3582, 3979, 4577, 6228, 7164, 7958, 9154, 11937, 13731, 15916, 18308, 23874, 27462, 34427, 35811, 41193, 47748, 54924, 68854, 71622, 82386, 103281, 137708, 143244, 164772, 206562, 309843, 413124, 619686, 791821, 1239372, 1583642, 2375463, 3167284, 4750926, 7126389, 9501852, 14252778, 28505556]

約数ペア:

[(1, 28505556), (2, 14252778), (3, 9501852), (4, 7126389), (6, 4750926), (9, 3167284), (12, 2375463), (18, 1583642), (23, 1239372), (36, 791821), (46, 619686), (69, 413124), (92, 309843), (138, 206562), (173, 164772), (199, 143244), (207, 137708), (276, 103281), (346, 82386), (398, 71622), (414, 68854), (519, 54924), (597, 47748), (692, 41193), (796, 35811), (828, 34427), (1038, 27462), (1194, 23874), (1557, 18308), (1791, 15916), (2076, 13731), (2388, 11937), (3114, 9154), (3582, 7958), (3979, 7164), (4577, 6228)]