18971740

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{3691}}^1$

素因数の和:3957

約数の個数: 24

約数和(自身を含む): 40006512

約数和(自身を除く): 21034772

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 3691, 5140, 7382, 14764, 18455, 36910, 73820, 948587, 1897174, 3794348, 4742935, 9485870, 18971740]

約数ペア:

[(1, 18971740), (2, 9485870), (4, 4742935), (5, 3794348), (10, 1897174), (20, 948587), (257, 73820), (514, 36910), (1028, 18455), (1285, 14764), (2570, 7382), (3691, 5140)]