20395480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3167}}^1$

素因数の和:3208

約数の個数: 64

約数和(自身を含む): 54743040

約数和(自身を除く): 34347560

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, 3167, 3220, 6334, 6440, 12668, 15835, 22169, 25336, 31670, 44338, 63340, 72841, 88676, 110845, 126680, 145682, 177352, 221690, 291364, 364205, 443380, 509887, 582728, 728410, 886760, 1019774, 1456820, 2039548, 2549435, 2913640, 4079096, 5098870, 10197740, 20395480]

約数ペア:

[(1, 20395480), (2, 10197740), (4, 5098870), (5, 4079096), (7, 2913640), (8, 2549435), (10, 2039548), (14, 1456820), (20, 1019774), (23, 886760), (28, 728410), (35, 582728), (40, 509887), (46, 443380), (56, 364205), (70, 291364), (92, 221690), (115, 177352), (140, 145682), (161, 126680), (184, 110845), (230, 88676), (280, 72841), (322, 63340), (460, 44338), (644, 31670), (805, 25336), (920, 22169), (1288, 15835), (1610, 12668), (3167, 6440), (3220, 6334)]