20751720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:303

約数の個数: 128

約数和(自身を含む): 69120000

約数和(自身を除く): 48368280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 79, 88, 110, 120, 132, 158, 165, 199, 220, 237, 264, 316, 330, 395, 398, 440, 474, 597, 632, 660, 790, 796, 869, 948, 995, 1185, 1194, 1320, 1580, 1592, 1738, 1896, 1990, 2189, 2370, 2388, 2607, 2985, 3160, 3476, 3980, 4345, 4378, 4740, 4776, 5214, 5970, 6567, 6952, 7960, 8690, 8756, 9480, 10428, 10945, 11940, 13035, 13134, 15721, 17380, 17512, 20856, 21890, 23880, 26070, 26268, 31442, 32835, 34760, 43780, 47163, 52140, 52536, 62884, 65670, 78605, 87560, 94326, 104280, 125768, 131340, 157210, 172931, 188652, 235815, 262680, 314420, 345862, 377304, 471630, 518793, 628840, 691724, 864655, 943260, 1037586, 1383448, 1729310, 1886520, 2075172, 2593965, 3458620, 4150344, 5187930, 6917240, 10375860, 20751720]

約数ペア:

[(1, 20751720), (2, 10375860), (3, 6917240), (4, 5187930), (5, 4150344), (6, 3458620), (8, 2593965), (10, 2075172), (11, 1886520), (12, 1729310), (15, 1383448), (20, 1037586), (22, 943260), (24, 864655), (30, 691724), (33, 628840), (40, 518793), (44, 471630), (55, 377304), (60, 345862), (66, 314420), (79, 262680), (88, 235815), (110, 188652), (120, 172931), (132, 157210), (158, 131340), (165, 125768), (199, 104280), (220, 94326), (237, 87560), (264, 78605), (316, 65670), (330, 62884), (395, 52536), (398, 52140), (440, 47163), (474, 43780), (597, 34760), (632, 32835), (660, 31442), (790, 26268), (796, 26070), (869, 23880), (948, 21890), (995, 20856), (1185, 17512), (1194, 17380), (1320, 15721), (1580, 13134), (1592, 13035), (1738, 11940), (1896, 10945), (1990, 10428), (2189, 9480), (2370, 8756), (2388, 8690), (2607, 7960), (2985, 6952), (3160, 6567), (3476, 5970), (3980, 5214), (4345, 4776), (4378, 4740)]