79780040

素因数分解:

$2^3\times 5^1\times {\mathrm{1994501}}^1$

素因数の和:1994512

約数の個数: 16

約数和(自身を含む): 179505180

約数和(自身を除く): 99725140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1994501, 3989002, 7978004, 9972505, 15956008, 19945010, 39890020, 79780040]

約数ペア:

[(1, 79780040), (2, 39890020), (4, 19945010), (5, 15956008), (8, 9972505), (10, 7978004), (20, 3989002), (40, 1994501)]