20987208

素因数分解:

$2^3\times 3^3\times {\mathrm{11}}^3\times {\mathrm{73}}^1$

素因数の和:121

約数の個数: 128

約数和(自身を含む): 65001600

約数和(自身を除く): 44014392

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 18, 22, 24, 27, 33, 36, 44, 54, 66, 72, 73, 88, 99, 108, 121, 132, 146, 198, 216, 219, 242, 264, 292, 297, 363, 396, 438, 484, 584, 594, 657, 726, 792, 803, 876, 968, 1089, 1188, 1314, 1331, 1452, 1606, 1752, 1971, 2178, 2376, 2409, 2628, 2662, 2904, 3212, 3267, 3942, 3993, 4356, 4818, 5256, 5324, 6424, 6534, 7227, 7884, 7986, 8712, 8833, 9636, 10648, 11979, 13068, 14454, 15768, 15972, 17666, 19272, 21681, 23958, 26136, 26499, 28908, 31944, 35332, 35937, 43362, 47916, 52998, 57816, 70664, 71874, 79497, 86724, 95832, 97163, 105996, 143748, 158994, 173448, 194326, 211992, 238491, 287496, 291489, 317988, 388652, 476982, 582978, 635976, 777304, 874467, 953964, 1165956, 1748934, 1907928, 2331912, 2623401, 3497868, 5246802, 6995736, 10493604, 20987208]

約数ペア:

[(1, 20987208), (2, 10493604), (3, 6995736), (4, 5246802), (6, 3497868), (8, 2623401), (9, 2331912), (11, 1907928), (12, 1748934), (18, 1165956), (22, 953964), (24, 874467), (27, 777304), (33, 635976), (36, 582978), (44, 476982), (54, 388652), (66, 317988), (72, 291489), (73, 287496), (88, 238491), (99, 211992), (108, 194326), (121, 173448), (132, 158994), (146, 143748), (198, 105996), (216, 97163), (219, 95832), (242, 86724), (264, 79497), (292, 71874), (297, 70664), (363, 57816), (396, 52998), (438, 47916), (484, 43362), (584, 35937), (594, 35332), (657, 31944), (726, 28908), (792, 26499), (803, 26136), (876, 23958), (968, 21681), (1089, 19272), (1188, 17666), (1314, 15972), (1331, 15768), (1452, 14454), (1606, 13068), (1752, 11979), (1971, 10648), (2178, 9636), (2376, 8833), (2409, 8712), (2628, 7986), (2662, 7884), (2904, 7227), (3212, 6534), (3267, 6424), (3942, 5324), (3993, 5256), (4356, 4818)]