31291689

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 52136000

約数和(自身を除く): 20844311

約数列:

[1, 3, 11, 13, 19, 33, 39, 57, 121, 143, 209, 247, 349, 363, 429, 627, 741, 1047, 1573, 2299, 2717, 3839, 4537, 4719, 6631, 6897, 8151, 11517, 13611, 19893, 29887, 42229, 49907, 72941, 86203, 89661, 126687, 149721, 218823, 258609, 548977, 802351, 948233, 1646931, 2407053, 2844699, 10430563, 31291689]

約数ペア:

[(1, 31291689), (3, 10430563), (11, 2844699), (13, 2407053), (19, 1646931), (33, 948233), (39, 802351), (57, 548977), (121, 258609), (143, 218823), (209, 149721), (247, 126687), (349, 89661), (363, 86203), (429, 72941), (627, 49907), (741, 42229), (1047, 29887), (1573, 19893), (2299, 13611), (2717, 11517), (3839, 8151), (4537, 6897), (4719, 6631)]