989898021

素因数分解:

$3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{114691}}^1$

素因数の和:114841

約数の個数: 24

約数和(自身を含む): 1646059584

約数和(自身を除く): 656161563

約数列:

[1, 3, 7, 9, 21, 63, 137, 411, 959, 1233, 2877, 8631, 114691, 344073, 802837, 1032219, 2408511, 7225533, 15712667, 47138001, 109988669, 141414003, 329966007, 989898021]

約数ペア:

[(1, 989898021), (3, 329966007), (7, 141414003), (9, 109988669), (21, 47138001), (63, 15712667), (137, 7225533), (411, 2408511), (959, 1032219), (1233, 802837), (2877, 344073), (8631, 114691)]