202020021

素因数分解:

$3^3\times 7^1\times {\mathrm{1068889}}^1$

素因数の和:1068905

約数の個数: 16

約数和(自身を含む): 342044800

約数和(自身を除く): 140024779

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 1068889, 3206667, 7482223, 9620001, 22446669, 28860003, 67340007, 202020021]

約数ペア:

[(1, 202020021), (3, 67340007), (7, 28860003), (9, 22446669), (21, 9620001), (27, 7482223), (63, 3206667), (189, 1068889)]