220987520

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26561}}^1$

素因数の和:26593

約数の個数: 64

約数和(自身を含む): 568958040

約数和(自身を除く): 347970520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 4160, 8320, 26561, 53122, 106244, 132805, 212488, 265610, 345293, 424976, 531220, 690586, 849952, 1062440, 1381172, 1699904, 1726465, 2124880, 2762344, 3399808, 3452930, 4249760, 5524688, 6905860, 8499520, 11049376, 13811720, 16999040, 22098752, 27623440, 44197504, 55246880, 110493760, 220987520]

約数ペア:

[(1, 220987520), (2, 110493760), (4, 55246880), (5, 44197504), (8, 27623440), (10, 22098752), (13, 16999040), (16, 13811720), (20, 11049376), (26, 8499520), (32, 6905860), (40, 5524688), (52, 4249760), (64, 3452930), (65, 3399808), (80, 2762344), (104, 2124880), (128, 1726465), (130, 1699904), (160, 1381172), (208, 1062440), (260, 849952), (320, 690586), (416, 531220), (520, 424976), (640, 345293), (832, 265610), (1040, 212488), (1664, 132805), (2080, 106244), (4160, 53122), (8320, 26561)]