20991006

素因数分解:

$2^1\times 3^2\times {\mathrm{89}}^1\times {\mathrm{13103}}^1$

素因数の和:13200

約数の個数: 24

約数和(自身を含む): 45995040

約数和(自身を除く): 25004034

約数列:

[1, 2, 3, 6, 9, 18, 89, 178, 267, 534, 801, 1602, 13103, 26206, 39309, 78618, 117927, 235854, 1166167, 2332334, 3498501, 6997002, 10495503, 20991006]

約数ペア:

[(1, 20991006), (2, 10495503), (3, 6997002), (6, 3498501), (9, 2332334), (18, 1166167), (89, 235854), (178, 117927), (267, 78618), (534, 39309), (801, 26206), (1602, 13103)]