16120839

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{257}}^1$

素因数の和:399

約数の個数: 32

約数和(自身を含む): 25758720

約数和(自身を除く): 9637881

約数列:

[1, 3, 7, 21, 29, 87, 103, 203, 257, 309, 609, 721, 771, 1799, 2163, 2987, 5397, 7453, 8961, 20909, 22359, 26471, 52171, 62727, 79413, 156513, 185297, 555891, 767659, 2302977, 5373613, 16120839]

約数ペア:

[(1, 16120839), (3, 5373613), (7, 2302977), (21, 767659), (29, 555891), (87, 185297), (103, 156513), (203, 79413), (257, 62727), (309, 52171), (609, 26471), (721, 22359), (771, 20909), (1799, 8961), (2163, 7453), (2987, 5397)]