20577779

素因数分解:

${\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{283}}^1$

素因数の和:434

約数の個数: 16

約数和(自身を含む): 22492800

約数和(自身を除く): 1915021

約数列:

[1, 19, 43, 89, 283, 817, 1691, 3827, 5377, 12169, 25187, 72713, 231211, 478553, 1083041, 20577779]

約数ペア:

[(1, 20577779), (19, 1083041), (43, 478553), (89, 231211), (283, 72713), (817, 25187), (1691, 12169), (3827, 5377)]