1981540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9007}}^1$

素因数の和:9027

約数の個数: 24

約数和(自身を含む): 4540032

約数和(自身を除く): 2558492

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 9007, 18014, 36028, 45035, 90070, 99077, 180140, 198154, 396308, 495385, 990770, 1981540]

約数ペア:

[(1, 1981540), (2, 990770), (4, 495385), (5, 396308), (10, 198154), (11, 180140), (20, 99077), (22, 90070), (44, 45035), (55, 36028), (110, 18014), (220, 9007)]