26821808

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{128951}}^1$

素因数の和:128972

約数の個数: 20

約数和(自身を含む): 55965168

約数和(自身を除く): 29143360

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 128951, 257902, 515804, 1031608, 1676363, 2063216, 3352726, 6705452, 13410904, 26821808]

約数ペア:

[(1, 26821808), (2, 13410904), (4, 6705452), (8, 3352726), (13, 2063216), (16, 1676363), (26, 1031608), (52, 515804), (104, 257902), (208, 128951)]