13081520

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1619}}^1$

素因数の和:1733

約数の個数: 40

約数和(自身を含む): 30734640

約数和(自身を除く): 17653120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 1619, 2020, 3238, 4040, 6476, 8080, 8095, 12952, 16190, 25904, 32380, 64760, 129520, 163519, 327038, 654076, 817595, 1308152, 1635190, 2616304, 3270380, 6540760, 13081520]

約数ペア:

[(1, 13081520), (2, 6540760), (4, 3270380), (5, 2616304), (8, 1635190), (10, 1308152), (16, 817595), (20, 654076), (40, 327038), (80, 163519), (101, 129520), (202, 64760), (404, 32380), (505, 25904), (808, 16190), (1010, 12952), (1616, 8095), (1619, 8080), (2020, 6476), (3238, 4040)]