99980840

素因数分解:

$2^3\times 5^1\times {\mathrm{2499521}}^1$

素因数の和:2499532

約数の個数: 16

約数和(自身を含む): 224956980

約数和(自身を除く): 124976140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2499521, 4999042, 9998084, 12497605, 19996168, 24995210, 49990420, 99980840]

約数ペア:

[(1, 99980840), (2, 49990420), (4, 24995210), (5, 19996168), (8, 12497605), (10, 9998084), (20, 4999042), (40, 2499521)]