31990287

素因数分解:

$3^1\times 7^2\times {\mathrm{269}}^1\times {\mathrm{809}}^1$

素因数の和:1095

約数の個数: 24

約数和(自身を含む): 49863600

約数和(自身を除く): 17873313

約数列:

[1, 3, 7, 21, 49, 147, 269, 807, 809, 1883, 2427, 5649, 5663, 13181, 16989, 39543, 39641, 118923, 217621, 652863, 1523347, 4570041, 10663429, 31990287]

約数ペア:

[(1, 31990287), (3, 10663429), (7, 4570041), (21, 1523347), (49, 652863), (147, 217621), (269, 118923), (807, 39641), (809, 39543), (1883, 16989), (2427, 13181), (5649, 5663)]