19154919640

素因数分解:

$2^3\times 5^1\times {\mathrm{478872991}}^1$

素因数の和:478873002

約数の個数: 16

約数和(自身を含む): 43098569280

約数和(自身を除く): 23943649640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 478872991, 957745982, 1915491964, 2394364955, 3830983928, 4788729910, 9577459820, 19154919640]

約数ペア:

[(1, 19154919640), (2, 9577459820), (4, 4788729910), (5, 3830983928), (8, 2394364955), (10, 1915491964), (20, 957745982), (40, 478872991)]