21581857

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{881}}^1$

素因数の和:1040

約数の個数: 16

約数和(自身を含む): 25147584

約数和(自身を除く): 3565727

約数列:

[1, 11, 17, 131, 187, 881, 1441, 2227, 9691, 14977, 24497, 115411, 164747, 1269521, 1961987, 21581857]

約数ペア:

[(1, 21581857), (11, 1961987), (17, 1269521), (131, 164747), (187, 115411), (881, 24497), (1441, 14977), (2227, 9691)]