138840289

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{4603}}^1$

素因数の和:4780

約数の個数: 16

約数和(自身を含む): 165007360

約数和(自身を除く): 26167071

約数列:

[1, 7, 31, 139, 217, 973, 4309, 4603, 30163, 32221, 142693, 639817, 998851, 4478719, 19834327, 138840289]

約数ペア:

[(1, 138840289), (7, 19834327), (31, 4478719), (139, 998851), (217, 639817), (973, 142693), (4309, 32221), (4603, 30163)]