21329973

素因数分解:

$3^4\times 7^1\times {\mathrm{37619}}^1$

素因数の和:37638

約数の個数: 20

約数和(自身を含む): 36416160

約数和(自身を除く): 15086187

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 37619, 112857, 263333, 338571, 789999, 1015713, 2369997, 3047139, 7109991, 21329973]

約数ペア:

[(1, 21329973), (3, 7109991), (7, 3047139), (9, 2369997), (21, 1015713), (27, 789999), (63, 338571), (81, 263333), (189, 112857), (567, 37619)]