1981028

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{509}}^1$

素因数の和:659

約数の個数: 24

約数和(自身を含む): 3998400

約数和(自身を除く): 2017372

約数列:

[1, 2, 4, 7, 14, 28, 139, 278, 509, 556, 973, 1018, 1946, 2036, 3563, 3892, 7126, 14252, 70751, 141502, 283004, 495257, 990514, 1981028]

約数ペア:

[(1, 1981028), (2, 990514), (4, 495257), (7, 283004), (14, 141502), (28, 70751), (139, 14252), (278, 7126), (509, 3892), (556, 3563), (973, 2036), (1018, 1946)]