20644624

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1289}}^1$

素因数の和:1328

約数の個数: 80

約数和(自身を含む): 53746560

約数和(自身を除く): 33101936

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 44, 52, 56, 77, 88, 91, 104, 112, 143, 154, 176, 182, 208, 286, 308, 364, 572, 616, 728, 1001, 1144, 1232, 1289, 1456, 2002, 2288, 2578, 4004, 5156, 8008, 9023, 10312, 14179, 16016, 16757, 18046, 20624, 28358, 33514, 36092, 56716, 67028, 72184, 99253, 113432, 117299, 134056, 144368, 184327, 198506, 226864, 234598, 268112, 368654, 397012, 469196, 737308, 794024, 938392, 1290289, 1474616, 1588048, 1876784, 2580578, 2949232, 5161156, 10322312, 20644624]

約数ペア:

[(1, 20644624), (2, 10322312), (4, 5161156), (7, 2949232), (8, 2580578), (11, 1876784), (13, 1588048), (14, 1474616), (16, 1290289), (22, 938392), (26, 794024), (28, 737308), (44, 469196), (52, 397012), (56, 368654), (77, 268112), (88, 234598), (91, 226864), (104, 198506), (112, 184327), (143, 144368), (154, 134056), (176, 117299), (182, 113432), (208, 99253), (286, 72184), (308, 67028), (364, 56716), (572, 36092), (616, 33514), (728, 28358), (1001, 20624), (1144, 18046), (1232, 16757), (1289, 16016), (1456, 14179), (2002, 10312), (2288, 9023), (2578, 8008), (4004, 5156)]