409287280

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1\times {\mathrm{547}}^1$

素因数の和:806

約数の個数: 80

約数和(自身を含む): 978508800

約数和(自身を除く): 569221520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 199, 235, 376, 398, 470, 547, 752, 796, 940, 995, 1094, 1592, 1880, 1990, 2188, 2735, 3184, 3760, 3980, 4376, 5470, 7960, 8752, 9353, 10940, 15920, 18706, 21880, 25709, 37412, 43760, 46765, 51418, 74824, 93530, 102836, 108853, 128545, 149648, 187060, 205672, 217706, 257090, 374120, 411344, 435412, 514180, 544265, 748240, 870824, 1028360, 1088530, 1741648, 2056720, 2177060, 4354120, 5116091, 8708240, 10232182, 20464364, 25580455, 40928728, 51160910, 81857456, 102321820, 204643640, 409287280]

約数ペア:

[(1, 409287280), (2, 204643640), (4, 102321820), (5, 81857456), (8, 51160910), (10, 40928728), (16, 25580455), (20, 20464364), (40, 10232182), (47, 8708240), (80, 5116091), (94, 4354120), (188, 2177060), (199, 2056720), (235, 1741648), (376, 1088530), (398, 1028360), (470, 870824), (547, 748240), (752, 544265), (796, 514180), (940, 435412), (995, 411344), (1094, 374120), (1592, 257090), (1880, 217706), (1990, 205672), (2188, 187060), (2735, 149648), (3184, 128545), (3760, 108853), (3980, 102836), (4376, 93530), (5470, 74824), (7960, 51418), (8752, 46765), (9353, 43760), (10940, 37412), (15920, 25709), (18706, 21880)]