21346160

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{191}}^1$

素因数の和:342

約数の個数: 80

約数和(自身を含む): 54853632

約数和(自身を除く): 33507472

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 127, 176, 191, 220, 254, 382, 440, 508, 635, 764, 880, 955, 1016, 1270, 1397, 1528, 1910, 2032, 2101, 2540, 2794, 3056, 3820, 4202, 5080, 5588, 6985, 7640, 8404, 10160, 10505, 11176, 13970, 15280, 16808, 21010, 22352, 24257, 27940, 33616, 42020, 48514, 55880, 84040, 97028, 111760, 121285, 168080, 194056, 242570, 266827, 388112, 485140, 533654, 970280, 1067308, 1334135, 1940560, 2134616, 2668270, 4269232, 5336540, 10673080, 21346160]

約数ペア:

[(1, 21346160), (2, 10673080), (4, 5336540), (5, 4269232), (8, 2668270), (10, 2134616), (11, 1940560), (16, 1334135), (20, 1067308), (22, 970280), (40, 533654), (44, 485140), (55, 388112), (80, 266827), (88, 242570), (110, 194056), (127, 168080), (176, 121285), (191, 111760), (220, 97028), (254, 84040), (382, 55880), (440, 48514), (508, 42020), (635, 33616), (764, 27940), (880, 24257), (955, 22352), (1016, 21010), (1270, 16808), (1397, 15280), (1528, 13970), (1910, 11176), (2032, 10505), (2101, 10160), (2540, 8404), (2794, 7640), (3056, 6985), (3820, 5588), (4202, 5080)]