19989008

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5653}}^1$

素因数の和:5691

約数の個数: 40

約数和(自身を含む): 44169048

約数和(自身を除く): 24180040

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 208, 221, 272, 442, 884, 1768, 3536, 5653, 11306, 22612, 45224, 73489, 90448, 96101, 146978, 192202, 293956, 384404, 587912, 768808, 1175824, 1249313, 1537616, 2498626, 4997252, 9994504, 19989008]

約数ペア:

[(1, 19989008), (2, 9994504), (4, 4997252), (8, 2498626), (13, 1537616), (16, 1249313), (17, 1175824), (26, 768808), (34, 587912), (52, 384404), (68, 293956), (104, 192202), (136, 146978), (208, 96101), (221, 90448), (272, 73489), (442, 45224), (884, 22612), (1768, 11306), (3536, 5653)]