21190761

素因数分解:

$3^3\times {\mathrm{157}}^1\times {\mathrm{4999}}^1$

素因数の和:5165

約数の個数: 16

約数和(自身を含む): 31600000

約数和(自身を除く): 10409239

約数列:

[1, 3, 9, 27, 157, 471, 1413, 4239, 4999, 14997, 44991, 134973, 784843, 2354529, 7063587, 21190761]

約数ペア:

[(1, 21190761), (3, 7063587), (9, 2354529), (27, 784843), (157, 134973), (471, 44991), (1413, 14997), (4239, 4999)]