18930406

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{20011}}^1$

素因数の和:20067

約数の個数: 16

約数和(自身を含む): 31699008

約数和(自身を除く): 12768602

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 20011, 40022, 220121, 440242, 860473, 1720946, 9465203, 18930406]

約数ペア:

[(1, 18930406), (2, 9465203), (11, 1720946), (22, 860473), (43, 440242), (86, 220121), (473, 40022), (946, 20011)]