18945619

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{7937}}^1$

素因数の和:7986

約数の個数: 16

約数和(自身を含む): 24385536

約数和(自身を除く): 5439917

約数列:

[1, 7, 11, 31, 77, 217, 341, 2387, 7937, 55559, 87307, 246047, 611149, 1722329, 2706517, 18945619]

約数ペア:

[(1, 18945619), (7, 2706517), (11, 1722329), (31, 611149), (77, 246047), (217, 87307), (341, 55559), (2387, 7937)]