999900520

素因数分解:

$2^3\times 5^1\times {\mathrm{24997513}}^1$

素因数の和:24997524

約数の個数: 16

約数和(自身を含む): 2249776260

約数和(自身を除く): 1249875740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 24997513, 49995026, 99990052, 124987565, 199980104, 249975130, 499950260, 999900520]

約数ペア:

[(1, 999900520), (2, 499950260), (4, 249975130), (5, 199980104), (8, 124987565), (10, 99990052), (20, 49995026), (40, 24997513)]