408304840

素因数分解:

$2^3\times 5^1\times {\mathrm{10207621}}^1$

素因数の和:10207632

約数の個数: 16

約数和(自身を含む): 918685980

約数和(自身を除く): 510381140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 10207621, 20415242, 40830484, 51038105, 81660968, 102076210, 204152420, 408304840]

約数ペア:

[(1, 408304840), (2, 204152420), (4, 102076210), (5, 81660968), (8, 51038105), (10, 40830484), (20, 20415242), (40, 10207621)]