81757120

素因数分解:

$2^6\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1069}}^1$

素因数の和:1325

約数の個数: 56

約数和(自身を含む): 195681600

約数和(自身を除く): 113924480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 239, 320, 478, 956, 1069, 1195, 1912, 2138, 2390, 3824, 4276, 4780, 5345, 7648, 8552, 9560, 10690, 15296, 17104, 19120, 21380, 34208, 38240, 42760, 68416, 76480, 85520, 171040, 255491, 342080, 510982, 1021964, 1277455, 2043928, 2554910, 4087856, 5109820, 8175712, 10219640, 16351424, 20439280, 40878560, 81757120]

約数ペア:

[(1, 81757120), (2, 40878560), (4, 20439280), (5, 16351424), (8, 10219640), (10, 8175712), (16, 5109820), (20, 4087856), (32, 2554910), (40, 2043928), (64, 1277455), (80, 1021964), (160, 510982), (239, 342080), (320, 255491), (478, 171040), (956, 85520), (1069, 76480), (1195, 68416), (1912, 42760), (2138, 38240), (2390, 34208), (3824, 21380), (4276, 19120), (4780, 17104), (5345, 15296), (7648, 10690), (8552, 9560)]