21439201

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{331}}^1\times {\mathrm{487}}^1$

素因数の和:844

約数の個数: 16

約数和(自身を含む): 25922560

約数和(自身を除く): 4483359

約数列:

[1, 7, 19, 133, 331, 487, 2317, 3409, 6289, 9253, 44023, 64771, 161197, 1128379, 3062743, 21439201]

約数ペア:

[(1, 21439201), (7, 3062743), (19, 1128379), (133, 161197), (331, 64771), (487, 44023), (2317, 9253), (3409, 6289)]