399186040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{199}}^1$

素因数の和:365

約数の個数: 128

約数和(自身を含む): 1016064000

約数和(自身を除く): 616877960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 47, 55, 88, 94, 97, 110, 188, 194, 199, 220, 235, 376, 388, 398, 440, 470, 485, 517, 776, 796, 940, 970, 995, 1034, 1067, 1592, 1880, 1940, 1990, 2068, 2134, 2189, 2585, 3880, 3980, 4136, 4268, 4378, 4559, 5170, 5335, 7960, 8536, 8756, 9118, 9353, 10340, 10670, 10945, 17512, 18236, 18706, 19303, 20680, 21340, 21890, 22795, 36472, 37412, 38606, 42680, 43780, 45590, 46765, 50149, 74824, 77212, 87560, 91180, 93530, 96515, 100298, 102883, 154424, 182360, 187060, 193030, 200596, 205766, 212333, 250745, 374120, 386060, 401192, 411532, 424666, 501490, 514415, 772120, 823064, 849332, 907241, 1002980, 1028830, 1061665, 1698664, 1814482, 2005960, 2057660, 2123330, 3628964, 4115320, 4246660, 4536205, 7257928, 8493320, 9072410, 9979651, 18144820, 19959302, 36289640, 39918604, 49898255, 79837208, 99796510, 199593020, 399186040]

約数ペア:

[(1, 399186040), (2, 199593020), (4, 99796510), (5, 79837208), (8, 49898255), (10, 39918604), (11, 36289640), (20, 19959302), (22, 18144820), (40, 9979651), (44, 9072410), (47, 8493320), (55, 7257928), (88, 4536205), (94, 4246660), (97, 4115320), (110, 3628964), (188, 2123330), (194, 2057660), (199, 2005960), (220, 1814482), (235, 1698664), (376, 1061665), (388, 1028830), (398, 1002980), (440, 907241), (470, 849332), (485, 823064), (517, 772120), (776, 514415), (796, 501490), (940, 424666), (970, 411532), (995, 401192), (1034, 386060), (1067, 374120), (1592, 250745), (1880, 212333), (1940, 205766), (1990, 200596), (2068, 193030), (2134, 187060), (2189, 182360), (2585, 154424), (3880, 102883), (3980, 100298), (4136, 96515), (4268, 93530), (4378, 91180), (4559, 87560), (5170, 77212), (5335, 74824), (7960, 50149), (8536, 46765), (8756, 45590), (9118, 43780), (9353, 42680), (10340, 38606), (10670, 37412), (10945, 36472), (17512, 22795), (18236, 21890), (18706, 21340), (19303, 20680)]