51538776880

素因数分解:

$2^4\times 5^1\times {\mathrm{644234711}}^1$

素因数の和:644234724

約数の個数: 20

約数和(自身を含む): 119827656432

約数和(自身を除く): 68288879552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 644234711, 1288469422, 2576938844, 3221173555, 5153877688, 6442347110, 10307755376, 12884694220, 25769388440, 51538776880]

約数ペア:

[(1, 51538776880), (2, 25769388440), (4, 12884694220), (5, 10307755376), (8, 6442347110), (10, 5153877688), (16, 3221173555), (20, 2576938844), (40, 1288469422), (80, 644234711)]