19990353584

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{67987}}^1$

素因数の和:68082

約数の個数: 80

約数和(自身を含む): 43703774208

約数和(自身を除く): 23713420624

約数列:

[1, 2, 4, 8, 16, 17, 23, 34, 46, 47, 68, 92, 94, 136, 184, 188, 272, 368, 376, 391, 752, 782, 799, 1081, 1564, 1598, 2162, 3128, 3196, 4324, 6256, 6392, 8648, 12784, 17296, 18377, 36754, 67987, 73508, 135974, 147016, 271948, 294032, 543896, 1087792, 1155779, 1563701, 2311558, 3127402, 3195389, 4623116, 6254804, 6390778, 9246232, 12509608, 12781556, 18492464, 25019216, 25563112, 26582917, 51126224, 53165834, 54321613, 73493947, 106331668, 108643226, 146987894, 212663336, 217286452, 293975788, 425326672, 434572904, 587951576, 869145808, 1175903152, 1249397099, 2498794198, 4997588396, 9995176792, 19990353584]

約数ペア:

[(1, 19990353584), (2, 9995176792), (4, 4997588396), (8, 2498794198), (16, 1249397099), (17, 1175903152), (23, 869145808), (34, 587951576), (46, 434572904), (47, 425326672), (68, 293975788), (92, 217286452), (94, 212663336), (136, 146987894), (184, 108643226), (188, 106331668), (272, 73493947), (368, 54321613), (376, 53165834), (391, 51126224), (752, 26582917), (782, 25563112), (799, 25019216), (1081, 18492464), (1564, 12781556), (1598, 12509608), (2162, 9246232), (3128, 6390778), (3196, 6254804), (4324, 4623116), (6256, 3195389), (6392, 3127402), (8648, 2311558), (12784, 1563701), (17296, 1155779), (18377, 1087792), (36754, 543896), (67987, 294032), (73508, 271948), (135974, 147016)]