2178284020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9901291}}^1$

素因数の和:9901311

約数の個数: 24

約数和(自身を含む): 4990251168

約数和(自身を除く): 2811967148

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 9901291, 19802582, 39605164, 49506455, 99012910, 108914201, 198025820, 217828402, 435656804, 544571005, 1089142010, 2178284020]

約数ペア:

[(1, 2178284020), (2, 1089142010), (4, 544571005), (5, 435656804), (10, 217828402), (11, 198025820), (20, 108914201), (22, 99012910), (44, 49506455), (55, 39605164), (110, 19802582), (220, 9901291)]