20637448

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{198437}}^1$

素因数の和:198456

約数の個数: 16

約数和(自身を含む): 41671980

約数和(自身を除く): 21034532

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 198437, 396874, 793748, 1587496, 2579681, 5159362, 10318724, 20637448]

約数ペア:

[(1, 20637448), (2, 10318724), (4, 5159362), (8, 2579681), (13, 1587496), (26, 793748), (52, 396874), (104, 198437)]