28720476

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{211}}^1$

素因数の和:439

約数の個数: 72

約数和(自身を含む): 77168000

約数和(自身を除く): 48447524

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 199, 211, 228, 342, 398, 422, 597, 633, 684, 796, 844, 1194, 1266, 1791, 1899, 2388, 2532, 3582, 3781, 3798, 4009, 7164, 7562, 7596, 8018, 11343, 12027, 15124, 16036, 22686, 24054, 34029, 36081, 41989, 45372, 48108, 68058, 72162, 83978, 125967, 136116, 144324, 167956, 251934, 377901, 503868, 755802, 797791, 1511604, 1595582, 2393373, 3191164, 4786746, 7180119, 9573492, 14360238, 28720476]

約数ペア:

[(1, 28720476), (2, 14360238), (3, 9573492), (4, 7180119), (6, 4786746), (9, 3191164), (12, 2393373), (18, 1595582), (19, 1511604), (36, 797791), (38, 755802), (57, 503868), (76, 377901), (114, 251934), (171, 167956), (199, 144324), (211, 136116), (228, 125967), (342, 83978), (398, 72162), (422, 68058), (597, 48108), (633, 45372), (684, 41989), (796, 36081), (844, 34029), (1194, 24054), (1266, 22686), (1791, 16036), (1899, 15124), (2388, 12027), (2532, 11343), (3582, 8018), (3781, 7596), (3798, 7562), (4009, 7164)]