20310191

素因数分解:

${\mathrm{11}}^1\times {\mathrm{101}}^2\times {\mathrm{181}}^1$

素因数の和:394

約数の個数: 12

約数和(自身を含む): 22501752

約数和(自身を除く): 2191561

約数列:

[1, 11, 101, 181, 1111, 1991, 10201, 18281, 112211, 201091, 1846381, 20310191]

約数ペア:

[(1, 20310191), (11, 1846381), (101, 201091), (181, 112211), (1111, 18281), (1991, 10201)]