21078010

素因数分解:

$2^1\times 5^1\times {\mathrm{1009}}^1\times {\mathrm{2089}}^1$

素因数の和:3105

約数の個数: 16

約数和(自身を含む): 37996200

約数和(自身を除く): 16918190

約数列:

[1, 2, 5, 10, 1009, 2018, 2089, 4178, 5045, 10090, 10445, 20890, 2107801, 4215602, 10539005, 21078010]

約数ペア:

[(1, 21078010), (2, 10539005), (5, 4215602), (10, 2107801), (1009, 20890), (2018, 10445), (2089, 10090), (4178, 5045)]