261780040

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{24329}}^1$

素因数の和:24609

約数の個数: 32

約数和(自身を含む): 591219000

約数和(自身を除く): 329438960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 2152, 2690, 5380, 10760, 24329, 48658, 97316, 121645, 194632, 243290, 486580, 973160, 6544501, 13089002, 26178004, 32722505, 52356008, 65445010, 130890020, 261780040]

約数ペア:

[(1, 261780040), (2, 130890020), (4, 65445010), (5, 52356008), (8, 32722505), (10, 26178004), (20, 13089002), (40, 6544501), (269, 973160), (538, 486580), (1076, 243290), (1345, 194632), (2152, 121645), (2690, 97316), (5380, 48658), (10760, 24329)]