21419811

素因数分解:

$3^2\times 7^2\times {\mathrm{48571}}^1$

素因数の和:48591

約数の個数: 18

約数和(自身を含む): 35991852

約数和(自身を除く): 14572041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 48571, 145713, 339997, 437139, 1019991, 2379979, 3059973, 7139937, 21419811]

約数ペア:

[(1, 21419811), (3, 7139937), (7, 3059973), (9, 2379979), (21, 1019991), (49, 437139), (63, 339997), (147, 145713), (441, 48571)]