25980040

素因数分解:

$2^3\times 5^1\times {\mathrm{649501}}^1$

素因数の和:649512

約数の個数: 16

約数和(自身を含む): 58455180

約数和(自身を除く): 32475140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 649501, 1299002, 2598004, 3247505, 5196008, 6495010, 12990020, 25980040]

約数ペア:

[(1, 25980040), (2, 12990020), (4, 6495010), (5, 5196008), (8, 3247505), (10, 2598004), (20, 1299002), (40, 649501)]