21685112

素因数分解:

$2^3\times {\mathrm{139}}^1\times {\mathrm{19501}}^1$

素因数の和:19646

約数の個数: 16

約数和(自身を含む): 40954200

約数和(自身を除く): 19269088

約数列:

[1, 2, 4, 8, 139, 278, 556, 1112, 19501, 39002, 78004, 156008, 2710639, 5421278, 10842556, 21685112]

約数ペア:

[(1, 21685112), (2, 10842556), (4, 5421278), (8, 2710639), (139, 156008), (278, 78004), (556, 39002), (1112, 19501)]