1991052784

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^2\times {\mathrm{137}}^1\times {\mathrm{449}}^1$

素因数の和:635

約数の個数: 120

約数和(自身を含む): 4728045600

約数和(自身を除く): 2736992816

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 56, 68, 112, 119, 136, 137, 238, 272, 274, 289, 449, 476, 548, 578, 898, 952, 959, 1096, 1156, 1796, 1904, 1918, 2023, 2192, 2312, 2329, 3143, 3592, 3836, 4046, 4624, 4658, 6286, 7184, 7633, 7672, 8092, 9316, 12572, 15266, 15344, 16184, 16303, 18632, 25144, 30532, 32368, 32606, 37264, 39593, 50288, 53431, 61064, 61513, 65212, 79186, 106862, 122128, 123026, 129761, 130424, 158372, 213724, 246052, 259522, 260848, 277151, 316744, 427448, 430591, 492104, 519044, 554302, 633488, 854896, 861182, 908327, 984208, 1038088, 1045721, 1108604, 1722364, 1816654, 2076176, 2091442, 2217208, 3444728, 3633308, 4182884, 4434416, 6889456, 7266616, 7320047, 8365768, 14533232, 14640094, 16731536, 17777257, 29280188, 35554514, 58560376, 71109028, 117120752, 124440799, 142218056, 248881598, 284436112, 497763196, 995526392, 1991052784]

約数ペア:

[(1, 1991052784), (2, 995526392), (4, 497763196), (7, 284436112), (8, 248881598), (14, 142218056), (16, 124440799), (17, 117120752), (28, 71109028), (34, 58560376), (56, 35554514), (68, 29280188), (112, 17777257), (119, 16731536), (136, 14640094), (137, 14533232), (238, 8365768), (272, 7320047), (274, 7266616), (289, 6889456), (449, 4434416), (476, 4182884), (548, 3633308), (578, 3444728), (898, 2217208), (952, 2091442), (959, 2076176), (1096, 1816654), (1156, 1722364), (1796, 1108604), (1904, 1045721), (1918, 1038088), (2023, 984208), (2192, 908327), (2312, 861182), (2329, 854896), (3143, 633488), (3592, 554302), (3836, 519044), (4046, 492104), (4624, 430591), (4658, 427448), (6286, 316744), (7184, 277151), (7633, 260848), (7672, 259522), (8092, 246052), (9316, 213724), (12572, 158372), (15266, 130424), (15344, 129761), (16184, 123026), (16303, 122128), (18632, 106862), (25144, 79186), (30532, 65212), (32368, 61513), (32606, 61064), (37264, 53431), (39593, 50288)]