28820272

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{138559}}^1$

素因数の和:138580

約数の個数: 20

約数和(自身を含む): 60135040

約数和(自身を除く): 31314768

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 138559, 277118, 554236, 1108472, 1801267, 2216944, 3602534, 7205068, 14410136, 28820272]

約数ペア:

[(1, 28820272), (2, 14410136), (4, 7205068), (8, 3602534), (13, 2216944), (16, 1801267), (26, 1108472), (52, 554236), (104, 277118), (208, 138559)]