51321520

素因数分解:

$2^4\times 5^1\times {\mathrm{641519}}^1$

素因数の和:641532

約数の個数: 20

約数和(自身を含む): 119322720

約数和(自身を除く): 68001200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641519, 1283038, 2566076, 3207595, 5132152, 6415190, 10264304, 12830380, 25660760, 51321520]

約数ペア:

[(1, 51321520), (2, 25660760), (4, 12830380), (5, 10264304), (8, 6415190), (10, 5132152), (16, 3207595), (20, 2566076), (40, 1283038), (80, 641519)]