20988656

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{100907}}^1$

素因数の和:100928

約数の個数: 20

約数和(自身を含む): 43794072

約数和(自身を除く): 22805416

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 100907, 201814, 403628, 807256, 1311791, 1614512, 2623582, 5247164, 10494328, 20988656]

約数ペア:

[(1, 20988656), (2, 10494328), (4, 5247164), (8, 2623582), (13, 1614512), (16, 1311791), (26, 807256), (52, 403628), (104, 201814), (208, 100907)]