25980280

素因数分解:

$2^3\times 5^1\times {\mathrm{649507}}^1$

素因数の和:649518

約数の個数: 16

約数和(自身を含む): 58455720

約数和(自身を除く): 32475440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 649507, 1299014, 2598028, 3247535, 5196056, 6495070, 12990140, 25980280]

約数ペア:

[(1, 25980280), (2, 12990140), (4, 6495070), (5, 5196056), (8, 3247535), (10, 2598028), (20, 1299014), (40, 649507)]