20907565

素因数分解:

$5^1\times 7^3\times {\mathrm{73}}^1\times {\mathrm{167}}^1$

素因数の和:266

約数の個数: 32

約数和(自身を含む): 29836800

約数和(自身を除く): 8929235

約数列:

[1, 5, 7, 35, 49, 73, 167, 245, 343, 365, 511, 835, 1169, 1715, 2555, 3577, 5845, 8183, 12191, 17885, 25039, 40915, 57281, 60955, 85337, 125195, 286405, 426685, 597359, 2986795, 4181513, 20907565]

約数ペア:

[(1, 20907565), (5, 4181513), (7, 2986795), (35, 597359), (49, 426685), (73, 286405), (167, 125195), (245, 85337), (343, 60955), (365, 57281), (511, 40915), (835, 25039), (1169, 17885), (1715, 12191), (2555, 8183), (3577, 5845)]