20515888

素因数分解:

$2^4\times {\mathrm{97}}^1\times {\mathrm{13219}}^1$

素因数の和:13324

約数の個数: 20

約数和(自身を含む): 40162360

約数和(自身を除く): 19646472

約数列:

[1, 2, 4, 8, 16, 97, 194, 388, 776, 1552, 13219, 26438, 52876, 105752, 211504, 1282243, 2564486, 5128972, 10257944, 20515888]

約数ペア:

[(1, 20515888), (2, 10257944), (4, 5128972), (8, 2564486), (16, 1282243), (97, 211504), (194, 105752), (388, 52876), (776, 26438), (1552, 13219)]