21029211

素因数分解:

$3^2\times 7^1\times {\mathrm{541}}^1\times {\mathrm{617}}^1$

素因数の和:1171

約数の個数: 24

約数和(自身を含む): 34835424

約数和(自身を除く): 13806213

約数列:

[1, 3, 7, 9, 21, 63, 541, 617, 1623, 1851, 3787, 4319, 4869, 5553, 11361, 12957, 34083, 38871, 333797, 1001391, 2336579, 3004173, 7009737, 21029211]

約数ペア:

[(1, 21029211), (3, 7009737), (7, 3004173), (9, 2336579), (21, 1001391), (63, 333797), (541, 38871), (617, 34083), (1623, 12957), (1851, 11361), (3787, 5553), (4319, 4869)]