21126248

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{313}}^1$

素因数の和:402

約数の個数: 64

約数和(自身を含む): 47476800

約数和(自身を除く): 26350552

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 59, 88, 104, 118, 143, 236, 286, 313, 472, 572, 626, 649, 767, 1144, 1252, 1298, 1534, 2504, 2596, 3068, 3443, 4069, 5192, 6136, 6886, 8138, 8437, 13772, 16276, 16874, 18467, 27544, 32552, 33748, 36934, 44759, 67496, 73868, 89518, 147736, 179036, 203137, 240071, 358072, 406274, 480142, 812548, 960284, 1625096, 1920568, 2640781, 5281562, 10563124, 21126248]

約数ペア:

[(1, 21126248), (2, 10563124), (4, 5281562), (8, 2640781), (11, 1920568), (13, 1625096), (22, 960284), (26, 812548), (44, 480142), (52, 406274), (59, 358072), (88, 240071), (104, 203137), (118, 179036), (143, 147736), (236, 89518), (286, 73868), (313, 67496), (472, 44759), (572, 36934), (626, 33748), (649, 32552), (767, 27544), (1144, 18467), (1252, 16874), (1298, 16276), (1534, 13772), (2504, 8437), (2596, 8138), (3068, 6886), (3443, 6136), (4069, 5192)]