87980840

素因数分解:

$2^3\times 5^1\times {\mathrm{2199521}}^1$

素因数の和:2199532

約数の個数: 16

約数和(自身を含む): 197956980

約数和(自身を除く): 109976140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2199521, 4399042, 8798084, 10997605, 17596168, 21995210, 43990420, 87980840]

約数ペア:

[(1, 87980840), (2, 43990420), (4, 21995210), (5, 17596168), (8, 10997605), (10, 8798084), (20, 4399042), (40, 2199521)]