21254331

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53269}}^1$

素因数の和:53298

約数の個数: 16

約数和(自身を含む): 34092800

約数和(自身を除く): 12838469

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 53269, 159807, 372883, 1012111, 1118649, 3036333, 7084777, 21254331]

約数ペア:

[(1, 21254331), (3, 7084777), (7, 3036333), (19, 1118649), (21, 1012111), (57, 372883), (133, 159807), (399, 53269)]