81840440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{8087}}^1$

素因数の和:8132

約数の個数: 64

約数和(自身を含む): 209640960

約数和(自身を除く): 127800520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 88, 92, 110, 115, 184, 220, 230, 253, 440, 460, 506, 920, 1012, 1265, 2024, 2530, 5060, 8087, 10120, 16174, 32348, 40435, 64696, 80870, 88957, 161740, 177914, 186001, 323480, 355828, 372002, 444785, 711656, 744004, 889570, 930005, 1488008, 1779140, 1860010, 2046011, 3558280, 3720020, 4092022, 7440040, 8184044, 10230055, 16368088, 20460110, 40920220, 81840440]

約数ペア:

[(1, 81840440), (2, 40920220), (4, 20460110), (5, 16368088), (8, 10230055), (10, 8184044), (11, 7440040), (20, 4092022), (22, 3720020), (23, 3558280), (40, 2046011), (44, 1860010), (46, 1779140), (55, 1488008), (88, 930005), (92, 889570), (110, 744004), (115, 711656), (184, 444785), (220, 372002), (230, 355828), (253, 323480), (440, 186001), (460, 177914), (506, 161740), (920, 88957), (1012, 80870), (1265, 64696), (2024, 40435), (2530, 32348), (5060, 16174), (8087, 10120)]