1980972196

素因数分解:

$2^2\times 7^2\times {\mathrm{10107001}}^1$

素因数の和:10107019

約数の個数: 18

約数和(自身を含む): 4032693798

約数和(自身を除く): 2051721602

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 10107001, 20214002, 40428004, 70749007, 141498014, 282996028, 495243049, 990486098, 1980972196]

約数ペア:

[(1, 1980972196), (2, 990486098), (4, 495243049), (7, 282996028), (14, 141498014), (28, 70749007), (49, 40428004), (98, 20214002), (196, 10107001)]