20678812

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67139}}^1$

素因数の和:67161

約数の個数: 24

約数和(自身を含む): 45118080

約数和(自身を除く): 24439268

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 67139, 134278, 268556, 469973, 738529, 939946, 1477058, 1879892, 2954116, 5169703, 10339406, 20678812]

約数ペア:

[(1, 20678812), (2, 10339406), (4, 5169703), (7, 2954116), (11, 1879892), (14, 1477058), (22, 939946), (28, 738529), (44, 469973), (77, 268556), (154, 134278), (308, 67139)]