821480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1867}}^1$

素因数の和:1889

約数の個数: 32

約数和(自身を含む): 2017440

約数和(自身を除く): 1195960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 1867, 3734, 7468, 9335, 14936, 18670, 20537, 37340, 41074, 74680, 82148, 102685, 164296, 205370, 410740, 821480]

約数ペア:

[(1, 821480), (2, 410740), (4, 205370), (5, 164296), (8, 102685), (10, 82148), (11, 74680), (20, 41074), (22, 37340), (40, 20537), (44, 18670), (55, 14936), (88, 9335), (110, 7468), (220, 3734), (440, 1867)]