788334520

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{199}}^1\times {\mathrm{1021}}^1$

素因数の和:1328

約数の個数: 64

約数和(自身を含む): 1802808000

約数和(自身を除く): 1014473480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 199, 388, 398, 485, 776, 796, 970, 995, 1021, 1592, 1940, 1990, 2042, 3880, 3980, 4084, 5105, 7960, 8168, 10210, 19303, 20420, 38606, 40840, 77212, 96515, 99037, 154424, 193030, 198074, 203179, 386060, 396148, 406358, 495185, 772120, 792296, 812716, 990370, 1015895, 1625432, 1980740, 2031790, 3961480, 4063580, 8127160, 19708363, 39416726, 78833452, 98541815, 157666904, 197083630, 394167260, 788334520]

約数ペア:

[(1, 788334520), (2, 394167260), (4, 197083630), (5, 157666904), (8, 98541815), (10, 78833452), (20, 39416726), (40, 19708363), (97, 8127160), (194, 4063580), (199, 3961480), (388, 2031790), (398, 1980740), (485, 1625432), (776, 1015895), (796, 990370), (970, 812716), (995, 792296), (1021, 772120), (1592, 495185), (1940, 406358), (1990, 396148), (2042, 386060), (3880, 203179), (3980, 198074), (4084, 193030), (5105, 154424), (7960, 99037), (8168, 96515), (10210, 77212), (19303, 40840), (20420, 38606)]