9901473620

素因数分解:

$2^2\times 5^1\times {\mathrm{495073681}}^1$

素因数の和:495073690

約数の個数: 12

約数和(自身を含む): 20793094644

約数和(自身を除く): 10891621024

約数列:

[1, 2, 4, 5, 10, 20, 495073681, 990147362, 1980294724, 2475368405, 4950736810, 9901473620]

約数ペア:

[(1, 9901473620), (2, 4950736810), (4, 2475368405), (5, 1980294724), (10, 990147362), (20, 495073681)]