77719280

素因数分解:

$2^4\times 5^1\times {\mathrm{971491}}^1$

素因数の和:971504

約数の個数: 20

約数和(自身を含む): 180697512

約数和(自身を除く): 102978232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 971491, 1942982, 3885964, 4857455, 7771928, 9714910, 15543856, 19429820, 38859640, 77719280]

約数ペア:

[(1, 77719280), (2, 38859640), (4, 19429820), (5, 15543856), (8, 9714910), (10, 7771928), (16, 4857455), (20, 3885964), (40, 1942982), (80, 971491)]