31269520

素因数分解:

$2^4\times 5^1\times {\mathrm{390869}}^1$

素因数の和:390882

約数の個数: 20

約数和(自身を含む): 72701820

約数和(自身を除く): 41432300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 390869, 781738, 1563476, 1954345, 3126952, 3908690, 6253904, 7817380, 15634760, 31269520]

約数ペア:

[(1, 31269520), (2, 15634760), (4, 7817380), (5, 6253904), (8, 3908690), (10, 3126952), (16, 1954345), (20, 1563476), (40, 781738), (80, 390869)]