21044471

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1$

素因数の和:371

約数の個数: 24

約数和(自身を含む): 26002944

約数和(自身を除く): 4958473

約数列:

[1, 7, 23, 49, 71, 161, 263, 497, 1127, 1633, 1841, 3479, 6049, 11431, 12887, 18673, 42343, 80017, 130711, 296401, 429479, 914977, 3006353, 21044471]

約数ペア:

[(1, 21044471), (7, 3006353), (23, 914977), (49, 429479), (71, 296401), (161, 130711), (263, 80017), (497, 42343), (1127, 18673), (1633, 12887), (1841, 11431), (3479, 6049)]