21197649

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{487}}^1\times {\mathrm{1319}}^1$

素因数の和:1820

約数の個数: 16

約数和(自身を含む): 30919680

約数和(自身を除く): 9722031

約数列:

[1, 3, 11, 33, 487, 1319, 1461, 3957, 5357, 14509, 16071, 43527, 642353, 1927059, 7065883, 21197649]

約数ペア:

[(1, 21197649), (3, 7065883), (11, 1927059), (33, 642353), (487, 43527), (1319, 16071), (1461, 14509), (3957, 5357)]