261872

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{1259}}^1$

素因数の和:1280

約数の個数: 20

約数和(自身を含む): 546840

約数和(自身を除く): 284968

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 1259, 2518, 5036, 10072, 16367, 20144, 32734, 65468, 130936, 261872]

約数ペア:

[(1, 261872), (2, 130936), (4, 65468), (8, 32734), (13, 20144), (16, 16367), (26, 10072), (52, 5036), (104, 2518), (208, 1259)]