20971745

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{4241}}^1$

素因数の和:4312

約数の個数: 16

約数和(自身を含む): 26877312

約数和(自身を除く): 5905567

約数列:

[1, 5, 23, 43, 115, 215, 989, 4241, 4945, 21205, 97543, 182363, 487715, 911815, 4194349, 20971745]

約数ペア:

[(1, 20971745), (5, 4194349), (23, 911815), (43, 487715), (115, 182363), (215, 97543), (989, 21205), (4241, 4945)]