21156246

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{263}}^1$

素因数の和:421

約数の個数: 48

約数和(自身を含む): 47567520

約数和(自身を除く): 26411274

約数列:

[1, 2, 3, 6, 9, 18, 41, 82, 109, 123, 218, 246, 263, 327, 369, 526, 654, 738, 789, 981, 1578, 1962, 2367, 4469, 4734, 8938, 10783, 13407, 21566, 26814, 28667, 32349, 40221, 57334, 64698, 80442, 86001, 97047, 172002, 194094, 258003, 516006, 1175347, 2350694, 3526041, 7052082, 10578123, 21156246]

約数ペア:

[(1, 21156246), (2, 10578123), (3, 7052082), (6, 3526041), (9, 2350694), (18, 1175347), (41, 516006), (82, 258003), (109, 194094), (123, 172002), (218, 97047), (246, 86001), (263, 80442), (327, 64698), (369, 57334), (526, 40221), (654, 32349), (738, 28667), (789, 26814), (981, 21566), (1578, 13407), (1962, 10783), (2367, 8938), (4469, 4734)]