221182521

素因数分解:

$3^1\times 7^4\times {\mathrm{30707}}^1$

素因数の和:30738

約数の個数: 20

約数和(自身を含む): 344052432

約数和(自身を除く): 122869911

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 7203, 30707, 92121, 214949, 644847, 1504643, 4513929, 10532501, 31597503, 73727507, 221182521]

約数ペア:

[(1, 221182521), (3, 73727507), (7, 31597503), (21, 10532501), (49, 4513929), (147, 1504643), (343, 644847), (1029, 214949), (2401, 92121), (7203, 30707)]