12900520

素因数分解:

$2^3\times 5^1\times {\mathrm{322513}}^1$

素因数の和:322524

約数の個数: 16

約数和(自身を含む): 29026260

約数和(自身を除く): 16125740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 322513, 645026, 1290052, 1612565, 2580104, 3225130, 6450260, 12900520]

約数ペア:

[(1, 12900520), (2, 6450260), (4, 3225130), (5, 2580104), (8, 1612565), (10, 1290052), (20, 645026), (40, 322513)]