80466520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{443}}^1$

素因数の和:712

約数の個数: 64

約数和(自身を含む): 191808000

約数和(自身を除く): 111341480

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 239, 380, 443, 478, 760, 886, 956, 1195, 1772, 1912, 2215, 2390, 3544, 4430, 4541, 4780, 8417, 8860, 9082, 9560, 16834, 17720, 18164, 22705, 33668, 36328, 42085, 45410, 67336, 84170, 90820, 105877, 168340, 181640, 211754, 336680, 423508, 529385, 847016, 1058770, 2011663, 2117540, 4023326, 4235080, 8046652, 10058315, 16093304, 20116630, 40233260, 80466520]

約数ペア:

[(1, 80466520), (2, 40233260), (4, 20116630), (5, 16093304), (8, 10058315), (10, 8046652), (19, 4235080), (20, 4023326), (38, 2117540), (40, 2011663), (76, 1058770), (95, 847016), (152, 529385), (190, 423508), (239, 336680), (380, 211754), (443, 181640), (478, 168340), (760, 105877), (886, 90820), (956, 84170), (1195, 67336), (1772, 45410), (1912, 42085), (2215, 36328), (2390, 33668), (3544, 22705), (4430, 18164), (4541, 17720), (4780, 16834), (8417, 9560), (8860, 9082)]