25664840

素因数分解:

$2^3\times 5^1\times {\mathrm{449}}^1\times {\mathrm{1429}}^1$

素因数の和:1889

約数の個数: 32

約数和(自身を含む): 57915000

約数和(自身を除く): 32250160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 449, 898, 1429, 1796, 2245, 2858, 3592, 4490, 5716, 7145, 8980, 11432, 14290, 17960, 28580, 57160, 641621, 1283242, 2566484, 3208105, 5132968, 6416210, 12832420, 25664840]

約数ペア:

[(1, 25664840), (2, 12832420), (4, 6416210), (5, 5132968), (8, 3208105), (10, 2566484), (20, 1283242), (40, 641621), (449, 57160), (898, 28580), (1429, 17960), (1796, 14290), (2245, 11432), (2858, 8980), (3592, 7145), (4490, 5716)]