20815496

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2819}}^1$

素因数の和:2909

約数の個数: 32

約数和(自身を含む): 42638400

約数和(自身を除く): 21822904

約数列:

[1, 2, 4, 8, 13, 26, 52, 71, 104, 142, 284, 568, 923, 1846, 2819, 3692, 5638, 7384, 11276, 22552, 36647, 73294, 146588, 200149, 293176, 400298, 800596, 1601192, 2601937, 5203874, 10407748, 20815496]

約数ペア:

[(1, 20815496), (2, 10407748), (4, 5203874), (8, 2601937), (13, 1601192), (26, 800596), (52, 400298), (71, 293176), (104, 200149), (142, 146588), (284, 73294), (568, 36647), (923, 22552), (1846, 11276), (2819, 7384), (3692, 5638)]