81977913

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{53267}}^1$

素因数の和:53298

約数の個数: 20

約数和(自身を含む): 128908560

約数和(自身を除く): 46930647

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 53267, 159801, 479403, 1012073, 1438209, 3036219, 4314627, 9108657, 27325971, 81977913]

約数ペア:

[(1, 81977913), (3, 27325971), (9, 9108657), (19, 4314627), (27, 3036219), (57, 1438209), (81, 1012073), (171, 479403), (513, 159801), (1539, 53267)]