21394247

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{5189}}^1$

素因数の和:5246

約数の個数: 16

約数和(自身を含む): 26572800

約数和(自身を除く): 5178553

約数列:

[1, 7, 19, 31, 133, 217, 589, 4123, 5189, 36323, 98591, 160859, 690137, 1126013, 3056321, 21394247]

約数ペア:

[(1, 21394247), (7, 3056321), (19, 1126013), (31, 690137), (133, 160859), (217, 98591), (589, 36323), (4123, 5189)]