21131649

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{30493}}^1$

素因数の和:30517

約数の個数: 24

約数和(自身を含む): 38056512

約数和(自身を除く): 16924863

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 30493, 91479, 213451, 274437, 335423, 640353, 1006269, 1921059, 2347961, 3018807, 7043883, 21131649]

約数ペア:

[(1, 21131649), (3, 7043883), (7, 3018807), (9, 2347961), (11, 1921059), (21, 1006269), (33, 640353), (63, 335423), (77, 274437), (99, 213451), (231, 91479), (693, 30493)]