78999640

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{5659}}^1$

素因数の和:6019

約数の個数: 32

約数和(自身を含む): 178290000

約数和(自身を除く): 99290360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1745, 2792, 3490, 5659, 6980, 11318, 13960, 22636, 28295, 45272, 56590, 113180, 226360, 1974991, 3949982, 7899964, 9874955, 15799928, 19749910, 39499820, 78999640]

約数ペア:

[(1, 78999640), (2, 39499820), (4, 19749910), (5, 15799928), (8, 9874955), (10, 7899964), (20, 3949982), (40, 1974991), (349, 226360), (698, 113180), (1396, 56590), (1745, 45272), (2792, 28295), (3490, 22636), (5659, 13960), (6980, 11318)]