20337680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^3\times {\mathrm{191}}^1$

素因数の和:237

約数の個数: 80

約数和(自身を含む): 52282368

約数和(自身を除く): 31944688

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 191, 220, 242, 382, 440, 484, 605, 764, 880, 955, 968, 1210, 1331, 1528, 1910, 1936, 2101, 2420, 2662, 3056, 3820, 4202, 4840, 5324, 6655, 7640, 8404, 9680, 10505, 10648, 13310, 15280, 16808, 21010, 21296, 23111, 26620, 33616, 42020, 46222, 53240, 84040, 92444, 106480, 115555, 168080, 184888, 231110, 254221, 369776, 462220, 508442, 924440, 1016884, 1271105, 1848880, 2033768, 2542210, 4067536, 5084420, 10168840, 20337680]

約数ペア:

[(1, 20337680), (2, 10168840), (4, 5084420), (5, 4067536), (8, 2542210), (10, 2033768), (11, 1848880), (16, 1271105), (20, 1016884), (22, 924440), (40, 508442), (44, 462220), (55, 369776), (80, 254221), (88, 231110), (110, 184888), (121, 168080), (176, 115555), (191, 106480), (220, 92444), (242, 84040), (382, 53240), (440, 46222), (484, 42020), (605, 33616), (764, 26620), (880, 23111), (955, 21296), (968, 21010), (1210, 16808), (1331, 15280), (1528, 13310), (1910, 10648), (1936, 10505), (2101, 9680), (2420, 8404), (2662, 7640), (3056, 6655), (3820, 5324), (4202, 4840)]