21085864

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{37123}}^1$

素因数の和:37200

約数の個数: 16

約数和(自身を含む): 40093920

約数和(自身を除く): 19008056

約数列:

[1, 2, 4, 8, 71, 142, 284, 568, 37123, 74246, 148492, 296984, 2635733, 5271466, 10542932, 21085864]

約数ペア:

[(1, 21085864), (2, 10542932), (4, 5271466), (8, 2635733), (71, 296984), (142, 148492), (284, 74246), (568, 37123)]