20895119

素因数分解:

$7^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1$

素因数の和:315

約数の個数: 24

約数和(自身を含む): 25521408

約数和(自身を除く): 4626289

約数列:

[1, 7, 43, 47, 49, 211, 301, 329, 1477, 2021, 2107, 2303, 9073, 9917, 10339, 14147, 63511, 69419, 99029, 426431, 444577, 485933, 2985017, 20895119]

約数ペア:

[(1, 20895119), (7, 2985017), (43, 485933), (47, 444577), (49, 426431), (211, 99029), (301, 69419), (329, 63511), (1477, 14147), (2021, 10339), (2107, 9917), (2303, 9073)]