28788656

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{138407}}^1$

素因数の和:138428

約数の個数: 20

約数和(自身を含む): 60069072

約数和(自身を除く): 31280416

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 138407, 276814, 553628, 1107256, 1799291, 2214512, 3598582, 7197164, 14394328, 28788656]

約数ペア:

[(1, 28788656), (2, 14394328), (4, 7197164), (8, 3598582), (13, 2214512), (16, 1799291), (26, 1107256), (52, 553628), (104, 276814), (208, 138407)]