21578051

素因数分解:

${\mathrm{11}}^2\times {\mathrm{151}}^1\times {\mathrm{1181}}^1$

素因数の和:1354

約数の個数: 12

約数和(自身を含む): 23895312

約数和(自身を除く): 2317261

約数列:

[1, 11, 121, 151, 1181, 1661, 12991, 18271, 142901, 178331, 1961641, 21578051]

約数ペア:

[(1, 21578051), (11, 1961641), (121, 178331), (151, 142901), (1181, 18271), (1661, 12991)]