81216975844

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{1068644419}}^1$

素因数の和:1068644442

約数の個数: 12

約数和(自身を含む): 149610218800

約数和(自身を除く): 68393242956

約数列:

[1, 2, 4, 19, 38, 76, 1068644419, 2137288838, 4274577676, 20304243961, 40608487922, 81216975844]

約数ペア:

[(1, 81216975844), (2, 40608487922), (4, 20304243961), (19, 4274577676), (38, 2137288838), (76, 1068644419)]