19911033

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{457}}^1$

素因数の和:613

約数の個数: 24

約数和(自身を含む): 29722368

約数和(自身を除く): 9811335

約数列:

[1, 3, 9, 47, 103, 141, 309, 423, 457, 927, 1371, 4113, 4841, 14523, 21479, 43569, 47071, 64437, 141213, 193311, 423639, 2212337, 6637011, 19911033]

約数ペア:

[(1, 19911033), (3, 6637011), (9, 2212337), (47, 423639), (103, 193311), (141, 141213), (309, 64437), (423, 47071), (457, 43569), (927, 21479), (1371, 14523), (4113, 4841)]