79909880

素因数分解:

$2^3\times 5^1\times {\mathrm{1997747}}^1$

素因数の和:1997758

約数の個数: 16

約数和(自身を含む): 179797320

約数和(自身を除く): 99887440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1997747, 3995494, 7990988, 9988735, 15981976, 19977470, 39954940, 79909880]

約数ペア:

[(1, 79909880), (2, 39954940), (4, 19977470), (5, 15981976), (8, 9988735), (10, 7990988), (20, 3995494), (40, 1997747)]