20199365991

素因数分解:

$3^2\times 7^2\times {\mathrm{45803551}}^1$

素因数の和:45803571

約数の個数: 18

約数和(自身を含む): 33940432032

約数和(自身を除く): 13741066041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45803551, 137410653, 320624857, 412231959, 961874571, 2244373999, 2885623713, 6733121997, 20199365991]

約数ペア:

[(1, 20199365991), (3, 6733121997), (7, 2885623713), (9, 2244373999), (21, 961874571), (49, 412231959), (63, 320624857), (147, 137410653), (441, 45803551)]