25801520

素因数分解:

$2^4\times 5^1\times {\mathrm{322519}}^1$

素因数の和:322532

約数の個数: 20

約数和(自身を含む): 59988720

約数和(自身を除く): 34187200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 322519, 645038, 1290076, 1612595, 2580152, 3225190, 5160304, 6450380, 12900760, 25801520]

約数ペア:

[(1, 25801520), (2, 12900760), (4, 6450380), (5, 5160304), (8, 3225190), (10, 2580152), (16, 1612595), (20, 1290076), (40, 645038), (80, 322519)]