20017818

素因数分解:

$2^1\times 3^2\times {\mathrm{223}}^1\times {\mathrm{4987}}^1$

素因数の和:5218

約数の個数: 24

約数和(自身を含む): 43575168

約数和(自身を除く): 23557350

約数列:

[1, 2, 3, 6, 9, 18, 223, 446, 669, 1338, 2007, 4014, 4987, 9974, 14961, 29922, 44883, 89766, 1112101, 2224202, 3336303, 6672606, 10008909, 20017818]

約数ペア:

[(1, 20017818), (2, 10008909), (3, 6672606), (6, 3336303), (9, 2224202), (18, 1112101), (223, 89766), (446, 44883), (669, 29922), (1338, 14961), (2007, 9974), (4014, 4987)]