81485320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{12653}}^1$

素因数の和:12694

約数の個数: 64

約数和(自身を含む): 218661120

約数和(自身を除く): 137175800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 6440, 12653, 25306, 50612, 63265, 88571, 101224, 126530, 177142, 253060, 291019, 354284, 442855, 506120, 582038, 708568, 885710, 1164076, 1455095, 1771420, 2037133, 2328152, 2910190, 3542840, 4074266, 5820380, 8148532, 10185665, 11640760, 16297064, 20371330, 40742660, 81485320]

約数ペア:

[(1, 81485320), (2, 40742660), (4, 20371330), (5, 16297064), (7, 11640760), (8, 10185665), (10, 8148532), (14, 5820380), (20, 4074266), (23, 3542840), (28, 2910190), (35, 2328152), (40, 2037133), (46, 1771420), (56, 1455095), (70, 1164076), (92, 885710), (115, 708568), (140, 582038), (161, 506120), (184, 442855), (230, 354284), (280, 291019), (322, 253060), (460, 177142), (644, 126530), (805, 101224), (920, 88571), (1288, 63265), (1610, 50612), (3220, 25306), (6440, 12653)]