25809040

素因数分解:

$2^4\times 5^1\times {\mathrm{322613}}^1$

素因数の和:322626

約数の個数: 20

約数和(自身を含む): 60006204

約数和(自身を除く): 34197164

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 322613, 645226, 1290452, 1613065, 2580904, 3226130, 5161808, 6452260, 12904520, 25809040]

約数ペア:

[(1, 25809040), (2, 12904520), (4, 6452260), (5, 5161808), (8, 3226130), (10, 2580904), (16, 1613065), (20, 1290452), (40, 645226), (80, 322613)]