20866208

素因数分解:

$2^5\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{317}}^1$

素因数の和:366

約数の個数: 72

約数和(自身を含む): 47961396

約数和(自身を除く): 27095188

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 32, 34, 44, 68, 88, 121, 136, 176, 187, 242, 272, 317, 352, 374, 484, 544, 634, 748, 968, 1268, 1496, 1936, 2057, 2536, 2992, 3487, 3872, 4114, 5072, 5389, 5984, 6974, 8228, 10144, 10778, 13948, 16456, 21556, 27896, 32912, 38357, 43112, 55792, 59279, 65824, 76714, 86224, 111584, 118558, 153428, 172448, 237116, 306856, 474232, 613712, 652069, 948464, 1227424, 1304138, 1896928, 2608276, 5216552, 10433104, 20866208]

約数ペア:

[(1, 20866208), (2, 10433104), (4, 5216552), (8, 2608276), (11, 1896928), (16, 1304138), (17, 1227424), (22, 948464), (32, 652069), (34, 613712), (44, 474232), (68, 306856), (88, 237116), (121, 172448), (136, 153428), (176, 118558), (187, 111584), (242, 86224), (272, 76714), (317, 65824), (352, 59279), (374, 55792), (484, 43112), (544, 38357), (634, 32912), (748, 27896), (968, 21556), (1268, 16456), (1496, 13948), (1936, 10778), (2057, 10144), (2536, 8228), (2992, 6974), (3487, 5984), (3872, 5389), (4114, 5072)]