21108752

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:208

約数の個数: 80

約数和(自身を含む): 49580160

約数和(自身を除く): 28471408

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 56, 58, 67, 97, 112, 116, 134, 194, 203, 232, 268, 388, 406, 464, 469, 536, 679, 776, 812, 938, 1072, 1358, 1552, 1624, 1876, 1943, 2716, 2813, 3248, 3752, 3886, 5432, 5626, 6499, 7504, 7772, 10864, 11252, 12998, 13601, 15544, 19691, 22504, 25996, 27202, 31088, 39382, 45008, 45493, 51992, 54404, 78764, 90986, 103984, 108808, 157528, 181972, 188471, 217616, 315056, 363944, 376942, 727888, 753884, 1319297, 1507768, 2638594, 3015536, 5277188, 10554376, 21108752]

約数ペア:

[(1, 21108752), (2, 10554376), (4, 5277188), (7, 3015536), (8, 2638594), (14, 1507768), (16, 1319297), (28, 753884), (29, 727888), (56, 376942), (58, 363944), (67, 315056), (97, 217616), (112, 188471), (116, 181972), (134, 157528), (194, 108808), (203, 103984), (232, 90986), (268, 78764), (388, 54404), (406, 51992), (464, 45493), (469, 45008), (536, 39382), (679, 31088), (776, 27202), (812, 25996), (938, 22504), (1072, 19691), (1358, 15544), (1552, 13601), (1624, 12998), (1876, 11252), (1943, 10864), (2716, 7772), (2813, 7504), (3248, 6499), (3752, 5626), (3886, 5432)]