21976691

素因数分解:

${\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1\times {\mathrm{151}}^1$

素因数の和:394

約数の個数: 16

約数和(自身を含む): 24558336

約数和(自身を除く): 2581645

約数列:

[1, 11, 101, 131, 151, 1111, 1441, 1661, 13231, 15251, 19781, 145541, 167761, 217591, 1997881, 21976691]

約数ペア:

[(1, 21976691), (11, 1997881), (101, 217591), (131, 167761), (151, 145541), (1111, 19781), (1441, 15251), (1661, 13231)]