80975647580

素因数分解:

$2^2\times 5^1\times {\mathrm{4048782379}}^1$

素因数の和:4048782388

約数の個数: 12

約数和(自身を含む): 170048859960

約数和(自身を除く): 89073212380

約数列:

[1, 2, 4, 5, 10, 20, 4048782379, 8097564758, 16195129516, 20243911895, 40487823790, 80975647580]

約数ペア:

[(1, 80975647580), (2, 40487823790), (4, 20243911895), (5, 16195129516), (10, 8097564758), (20, 4048782379)]