72579280

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{199}}^1$

素因数の和:356

約数の個数: 80

約数和(自身を含む): 174988800

約数和(自身を除く): 102409520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 97, 188, 194, 199, 235, 376, 388, 398, 470, 485, 752, 776, 796, 940, 970, 995, 1552, 1592, 1880, 1940, 1990, 3184, 3760, 3880, 3980, 4559, 7760, 7960, 9118, 9353, 15920, 18236, 18706, 19303, 22795, 36472, 37412, 38606, 45590, 46765, 72944, 74824, 77212, 91180, 93530, 96515, 149648, 154424, 182360, 187060, 193030, 308848, 364720, 374120, 386060, 748240, 772120, 907241, 1544240, 1814482, 3628964, 4536205, 7257928, 9072410, 14515856, 18144820, 36289640, 72579280]

約数ペア:

[(1, 72579280), (2, 36289640), (4, 18144820), (5, 14515856), (8, 9072410), (10, 7257928), (16, 4536205), (20, 3628964), (40, 1814482), (47, 1544240), (80, 907241), (94, 772120), (97, 748240), (188, 386060), (194, 374120), (199, 364720), (235, 308848), (376, 193030), (388, 187060), (398, 182360), (470, 154424), (485, 149648), (752, 96515), (776, 93530), (796, 91180), (940, 77212), (970, 74824), (995, 72944), (1552, 46765), (1592, 45590), (1880, 38606), (1940, 37412), (1990, 36472), (3184, 22795), (3760, 19303), (3880, 18706), (3980, 18236), (4559, 15920), (7760, 9353), (7960, 9118)]