51999972400

素因数分解:

$2^4\times 5^2\times {\mathrm{129999931}}^1$

素因数の和:129999949

約数の個数: 30

約数和(自身を含む): 124929934652

約数和(自身を除く): 72929962252

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 129999931, 259999862, 519999724, 649999655, 1039999448, 1299999310, 2079998896, 2599998620, 3249998275, 5199997240, 6499996550, 10399994480, 12999993100, 25999986200, 51999972400]

約数ペア:

[(1, 51999972400), (2, 25999986200), (4, 12999993100), (5, 10399994480), (8, 6499996550), (10, 5199997240), (16, 3249998275), (20, 2599998620), (25, 2079998896), (40, 1299999310), (50, 1039999448), (80, 649999655), (100, 519999724), (200, 259999862), (400, 129999931)]