1664840

素因数分解:

$2^3\times 5^1\times {\mathrm{41621}}^1$

素因数の和:41632

約数の個数: 16

約数和(自身を含む): 3745980

約数和(自身を除く): 2081140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41621, 83242, 166484, 208105, 332968, 416210, 832420, 1664840]

約数ペア:

[(1, 1664840), (2, 832420), (4, 416210), (5, 332968), (8, 208105), (10, 166484), (20, 83242), (40, 41621)]