18902653

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{7919}}^1$

素因数の和:7968

約数の個数: 16

約数和(自身を含む): 24330240

約数和(自身を除く): 5427587

約数列:

[1, 7, 11, 31, 77, 217, 341, 2387, 7919, 55433, 87109, 245489, 609763, 1718423, 2700379, 18902653]

約数ペア:

[(1, 18902653), (7, 2700379), (11, 1718423), (31, 609763), (77, 245489), (217, 87109), (341, 55433), (2387, 7919)]