78858800

素因数分解:

$2^4\times 5^2\times {\mathrm{197147}}^1$

素因数の和:197165

約数の個数: 30

約数和(自身を含む): 189459228

約数和(自身を除く): 110600428

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 197147, 394294, 788588, 985735, 1577176, 1971470, 3154352, 3942940, 4928675, 7885880, 9857350, 15771760, 19714700, 39429400, 78858800]

約数ペア:

[(1, 78858800), (2, 39429400), (4, 19714700), (5, 15771760), (8, 9857350), (10, 7885880), (16, 4928675), (20, 3942940), (25, 3154352), (40, 1971470), (50, 1577176), (80, 985735), (100, 788588), (200, 394294), (400, 197147)]