20138800

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1$

素因数の和:251

約数の個数: 120

約数和(自身を含む): 55353600

約数和(自身を除く): 35214800

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 25, 40, 44, 46, 50, 55, 80, 88, 92, 100, 110, 115, 176, 184, 199, 200, 220, 230, 253, 275, 368, 398, 400, 440, 460, 506, 550, 575, 796, 880, 920, 995, 1012, 1100, 1150, 1265, 1592, 1840, 1990, 2024, 2189, 2200, 2300, 2530, 3184, 3980, 4048, 4378, 4400, 4577, 4600, 4975, 5060, 6325, 7960, 8756, 9154, 9200, 9950, 10120, 10945, 12650, 15920, 17512, 18308, 19900, 20240, 21890, 22885, 25300, 35024, 36616, 39800, 43780, 45770, 50347, 50600, 54725, 73232, 79600, 87560, 91540, 100694, 101200, 109450, 114425, 175120, 183080, 201388, 218900, 228850, 251735, 366160, 402776, 437800, 457700, 503470, 805552, 875600, 915400, 1006940, 1258675, 1830800, 2013880, 2517350, 4027760, 5034700, 10069400, 20138800]

約数ペア:

[(1, 20138800), (2, 10069400), (4, 5034700), (5, 4027760), (8, 2517350), (10, 2013880), (11, 1830800), (16, 1258675), (20, 1006940), (22, 915400), (23, 875600), (25, 805552), (40, 503470), (44, 457700), (46, 437800), (50, 402776), (55, 366160), (80, 251735), (88, 228850), (92, 218900), (100, 201388), (110, 183080), (115, 175120), (176, 114425), (184, 109450), (199, 101200), (200, 100694), (220, 91540), (230, 87560), (253, 79600), (275, 73232), (368, 54725), (398, 50600), (400, 50347), (440, 45770), (460, 43780), (506, 39800), (550, 36616), (575, 35024), (796, 25300), (880, 22885), (920, 21890), (995, 20240), (1012, 19900), (1100, 18308), (1150, 17512), (1265, 15920), (1592, 12650), (1840, 10945), (1990, 10120), (2024, 9950), (2189, 9200), (2200, 9154), (2300, 8756), (2530, 7960), (3184, 6325), (3980, 5060), (4048, 4975), (4378, 4600), (4400, 4577)]