21294538

素因数分解:

$2^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1\times {\mathrm{929}}^1$

素因数の和:1161

約数の個数: 16

約数和(自身を含む): 32620680

約数和(自身を除く): 11326142

約数列:

[1, 2, 73, 146, 157, 314, 929, 1858, 11461, 22922, 67817, 135634, 145853, 291706, 10647269, 21294538]

約数ペア:

[(1, 21294538), (2, 10647269), (73, 291706), (146, 145853), (157, 135634), (314, 67817), (929, 22922), (1858, 11461)]