20802019964

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{311}}^1\times {\mathrm{4211}}^1$

素因数の和:4575

約数の個数: 72

約数和(自身を含む): 42057864576

約数和(自身を除く): 21255844612

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 209, 311, 361, 418, 622, 722, 836, 1244, 1444, 3421, 3971, 4211, 5909, 6842, 7942, 8422, 11818, 13684, 15884, 16844, 23636, 46321, 64999, 80009, 92642, 112271, 129998, 160018, 185284, 224542, 259996, 320036, 449084, 880099, 1234981, 1309621, 1520171, 1760198, 2469962, 2619242, 3040342, 3520396, 4939924, 5238484, 6080684, 14405831, 16721881, 24882799, 28811662, 33443762, 49765598, 57623324, 66887524, 99531196, 273710789, 472773181, 547421578, 945546362, 1094843156, 1891092724, 5200504991, 10401009982, 20802019964]

約数ペア:

[(1, 20802019964), (2, 10401009982), (4, 5200504991), (11, 1891092724), (19, 1094843156), (22, 945546362), (38, 547421578), (44, 472773181), (76, 273710789), (209, 99531196), (311, 66887524), (361, 57623324), (418, 49765598), (622, 33443762), (722, 28811662), (836, 24882799), (1244, 16721881), (1444, 14405831), (3421, 6080684), (3971, 5238484), (4211, 4939924), (5909, 3520396), (6842, 3040342), (7942, 2619242), (8422, 2469962), (11818, 1760198), (13684, 1520171), (15884, 1309621), (16844, 1234981), (23636, 880099), (46321, 449084), (64999, 320036), (80009, 259996), (92642, 224542), (112271, 185284), (129998, 160018)]