21091242

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{81749}}^1$

素因数の和:81797

約数の個数: 16

約数和(自身を含む): 43164000

約数和(自身を除く): 22072758

約数列:

[1, 2, 3, 6, 43, 86, 129, 258, 81749, 163498, 245247, 490494, 3515207, 7030414, 10545621, 21091242]

約数ペア:

[(1, 21091242), (2, 10545621), (3, 7030414), (6, 3515207), (43, 490494), (86, 245247), (129, 163498), (258, 81749)]