20335640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39107}}^1$

素因数の和:39131

約数の個数: 32

約数和(自身を含む): 49276080

約数和(自身を除く): 28940440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39107, 78214, 156428, 195535, 312856, 391070, 508391, 782140, 1016782, 1564280, 2033564, 2541955, 4067128, 5083910, 10167820, 20335640]

約数ペア:

[(1, 20335640), (2, 10167820), (4, 5083910), (5, 4067128), (8, 2541955), (10, 2033564), (13, 1564280), (20, 1016782), (26, 782140), (40, 508391), (52, 391070), (65, 312856), (104, 195535), (130, 156428), (260, 78214), (520, 39107)]