21071290

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{49003}}^1$

素因数の和:49053

約数の個数: 16

約数和(自身を含む): 38811168

約数和(自身を除く): 17739878

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 49003, 98006, 245015, 490030, 2107129, 4214258, 10535645, 21071290]

約数ペア:

[(1, 21071290), (2, 10535645), (5, 4214258), (10, 2107129), (43, 490030), (86, 245015), (215, 98006), (430, 49003)]