20087980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{91309}}^1$

素因数の和:91329

約数の個数: 24

約数和(自身を含む): 46020240

約数和(自身を除く): 25932260

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 91309, 182618, 365236, 456545, 913090, 1004399, 1826180, 2008798, 4017596, 5021995, 10043990, 20087980]

約数ペア:

[(1, 20087980), (2, 10043990), (4, 5021995), (5, 4017596), (10, 2008798), (11, 1826180), (20, 1004399), (22, 913090), (44, 456545), (55, 365236), (110, 182618), (220, 91309)]