79950005

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1\times {\mathrm{1999}}^1$

素因数の和:2444

約数の個数: 16

約数和(自身を含む): 101280000

約数和(自身を除く): 21329995

約数列:

[1, 5, 19, 95, 421, 1999, 2105, 7999, 9995, 37981, 39995, 189905, 841579, 4207895, 15990001, 79950005]

約数ペア:

[(1, 79950005), (5, 15990001), (19, 4207895), (95, 841579), (421, 189905), (1999, 39995), (2105, 37981), (7999, 9995)]