21647288

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{208147}}^1$

素因数の和:208166

約数の個数: 16

約数和(自身を含む): 43711080

約数和(自身を除く): 22063792

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 208147, 416294, 832588, 1665176, 2705911, 5411822, 10823644, 21647288]

約数ペア:

[(1, 21647288), (2, 10823644), (4, 5411822), (8, 2705911), (13, 1665176), (26, 832588), (52, 416294), (104, 208147)]