20489780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{44543}}^1$

素因数の和:44575

約数の個数: 24

約数和(自身を含む): 44900352

約数和(自身を除く): 24410572

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 44543, 89086, 178172, 222715, 445430, 890860, 1024489, 2048978, 4097956, 5122445, 10244890, 20489780]

約数ペア:

[(1, 20489780), (2, 10244890), (4, 5122445), (5, 4097956), (10, 2048978), (20, 1024489), (23, 890860), (46, 445430), (92, 222715), (115, 178172), (230, 89086), (460, 44543)]