1990456968

素因数分解:

$2^3\times 3^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{167}}^1\times {\mathrm{223}}^1$

素因数の和:547

約数の個数: 128

約数和(自身を含む): 5364817920

約数和(自身を除く): 3374360952

約数列:

[1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 131, 136, 167, 204, 223, 262, 334, 393, 408, 446, 501, 524, 668, 669, 786, 892, 1002, 1048, 1336, 1338, 1572, 1784, 2004, 2227, 2676, 2839, 3144, 3791, 4008, 4454, 5352, 5678, 6681, 7582, 8517, 8908, 11356, 11373, 13362, 15164, 17034, 17816, 21877, 22712, 22746, 26724, 29213, 30328, 34068, 37241, 43754, 45492, 53448, 58426, 65631, 68136, 74482, 87508, 87639, 90984, 111723, 116852, 131262, 148964, 175016, 175278, 223446, 233704, 262524, 297928, 350556, 371909, 446892, 496621, 525048, 633097, 701112, 743818, 893784, 993242, 1115727, 1266194, 1487636, 1489863, 1899291, 1986484, 2231454, 2532388, 2975272, 2979726, 3798582, 3972968, 4462908, 4878571, 5064776, 5959452, 7597164, 8925816, 9757142, 11918904, 14635713, 15194328, 19514284, 29271426, 39028568, 58542852, 82935707, 117085704, 165871414, 248807121, 331742828, 497614242, 663485656, 995228484, 1990456968]

約数ペア:

[(1, 1990456968), (2, 995228484), (3, 663485656), (4, 497614242), (6, 331742828), (8, 248807121), (12, 165871414), (17, 117085704), (24, 82935707), (34, 58542852), (51, 39028568), (68, 29271426), (102, 19514284), (131, 15194328), (136, 14635713), (167, 11918904), (204, 9757142), (223, 8925816), (262, 7597164), (334, 5959452), (393, 5064776), (408, 4878571), (446, 4462908), (501, 3972968), (524, 3798582), (668, 2979726), (669, 2975272), (786, 2532388), (892, 2231454), (1002, 1986484), (1048, 1899291), (1336, 1489863), (1338, 1487636), (1572, 1266194), (1784, 1115727), (2004, 993242), (2227, 893784), (2676, 743818), (2839, 701112), (3144, 633097), (3791, 525048), (4008, 496621), (4454, 446892), (5352, 371909), (5678, 350556), (6681, 297928), (7582, 262524), (8517, 233704), (8908, 223446), (11356, 175278), (11373, 175016), (13362, 148964), (15164, 131262), (17034, 116852), (17816, 111723), (21877, 90984), (22712, 87639), (22746, 87508), (26724, 74482), (29213, 68136), (30328, 65631), (34068, 58426), (37241, 53448), (43754, 45492)]