20885745

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{32381}}^1$

素因数の和:32432

約数の個数: 16

約数和(自身を含む): 34195392

約数和(自身を除く): 13309647

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 32381, 97143, 161905, 485715, 1392383, 4177149, 6961915, 20885745]

約数ペア:

[(1, 20885745), (3, 6961915), (5, 4177149), (15, 1392383), (43, 485715), (129, 161905), (215, 97143), (645, 32381)]