20504176

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1$

素因数の和:143

約数の個数: 120

約数和(自身を含む): 53434080

約数和(自身を除く): 32929904

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 17, 22, 28, 34, 44, 56, 68, 77, 88, 89, 112, 119, 121, 136, 154, 176, 178, 187, 238, 242, 272, 308, 356, 374, 476, 484, 616, 623, 712, 748, 847, 952, 968, 979, 1232, 1246, 1309, 1424, 1496, 1513, 1694, 1904, 1936, 1958, 2057, 2492, 2618, 2992, 3026, 3388, 3916, 4114, 4984, 5236, 6052, 6776, 6853, 7832, 8228, 9968, 10472, 10591, 10769, 12104, 13552, 13706, 14399, 15664, 16456, 16643, 20944, 21182, 21538, 24208, 27412, 28798, 32912, 33286, 42364, 43076, 54824, 57596, 66572, 75383, 84728, 86152, 109648, 115192, 116501, 133144, 150766, 169456, 172304, 183073, 230384, 233002, 266288, 301532, 366146, 466004, 603064, 732292, 932008, 1206128, 1281511, 1464584, 1864016, 2563022, 2929168, 5126044, 10252088, 20504176]

約数ペア:

[(1, 20504176), (2, 10252088), (4, 5126044), (7, 2929168), (8, 2563022), (11, 1864016), (14, 1464584), (16, 1281511), (17, 1206128), (22, 932008), (28, 732292), (34, 603064), (44, 466004), (56, 366146), (68, 301532), (77, 266288), (88, 233002), (89, 230384), (112, 183073), (119, 172304), (121, 169456), (136, 150766), (154, 133144), (176, 116501), (178, 115192), (187, 109648), (238, 86152), (242, 84728), (272, 75383), (308, 66572), (356, 57596), (374, 54824), (476, 43076), (484, 42364), (616, 33286), (623, 32912), (712, 28798), (748, 27412), (847, 24208), (952, 21538), (968, 21182), (979, 20944), (1232, 16643), (1246, 16456), (1309, 15664), (1424, 14399), (1496, 13706), (1513, 13552), (1694, 12104), (1904, 10769), (1936, 10591), (1958, 10472), (2057, 9968), (2492, 8228), (2618, 7832), (2992, 6853), (3026, 6776), (3388, 6052), (3916, 5236), (4114, 4984)]