20981127

素因数分解:

$3^1\times {\mathrm{89}}^1\times {\mathrm{179}}^1\times {\mathrm{439}}^1$

素因数の和:710

約数の個数: 16

約数和(自身を含む): 28512000

約数和(自身を除く): 7530873

約数列:

[1, 3, 89, 179, 267, 439, 537, 1317, 15931, 39071, 47793, 78581, 117213, 235743, 6993709, 20981127]

約数ペア:

[(1, 20981127), (3, 6993709), (89, 235743), (179, 117213), (267, 78581), (439, 47793), (537, 39071), (1317, 15931)]