1990972520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{743}}^1\times {\mathrm{2161}}^1$

素因数の和:2946

約数の個数: 64

約数和(自身を含む): 4632560640

約数和(自身を除く): 2641588120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 743, 1240, 1486, 2161, 2972, 3715, 4322, 5944, 7430, 8644, 10805, 14860, 17288, 21610, 23033, 29720, 43220, 46066, 66991, 86440, 92132, 115165, 133982, 184264, 230330, 267964, 334955, 460660, 535928, 669910, 921320, 1339820, 1605623, 2679640, 3211246, 6422492, 8028115, 12844984, 16056230, 32112460, 49774313, 64224920, 99548626, 199097252, 248871565, 398194504, 497743130, 995486260, 1990972520]

約数ペア:

[(1, 1990972520), (2, 995486260), (4, 497743130), (5, 398194504), (8, 248871565), (10, 199097252), (20, 99548626), (31, 64224920), (40, 49774313), (62, 32112460), (124, 16056230), (155, 12844984), (248, 8028115), (310, 6422492), (620, 3211246), (743, 2679640), (1240, 1605623), (1486, 1339820), (2161, 921320), (2972, 669910), (3715, 535928), (4322, 460660), (5944, 334955), (7430, 267964), (8644, 230330), (10805, 184264), (14860, 133982), (17288, 115165), (21610, 92132), (23033, 86440), (29720, 66991), (43220, 46066)]