20280020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{44087}}^1$

素因数の和:44119

約数の個数: 24

約数和(自身を含む): 44440704

約数和(自身を除く): 24160684

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 44087, 88174, 176348, 220435, 440870, 881740, 1014001, 2028002, 4056004, 5070005, 10140010, 20280020]

約数ペア:

[(1, 20280020), (2, 10140010), (4, 5070005), (5, 4056004), (10, 2028002), (20, 1014001), (23, 881740), (46, 440870), (92, 220435), (115, 176348), (230, 88174), (460, 44087)]