216040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{491}}^1$

素因数の和:513

約数の個数: 32

約数和(自身を含む): 531360

約数和(自身を除く): 315320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 491, 982, 1964, 2455, 3928, 4910, 5401, 9820, 10802, 19640, 21604, 27005, 43208, 54010, 108020, 216040]

約数ペア:

[(1, 216040), (2, 108020), (4, 54010), (5, 43208), (8, 27005), (10, 21604), (11, 19640), (20, 10802), (22, 9820), (40, 5401), (44, 4910), (55, 3928), (88, 2455), (110, 1964), (220, 982), (440, 491)]