25870760

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1009}}^1$

素因数の和:1661

約数の個数: 32

約数和(自身を含む): 58357800

約数和(自身を除く): 32487040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1009, 1282, 2018, 2564, 3205, 4036, 5045, 5128, 6410, 8072, 10090, 12820, 20180, 25640, 40360, 646769, 1293538, 2587076, 3233845, 5174152, 6467690, 12935380, 25870760]

約数ペア:

[(1, 25870760), (2, 12935380), (4, 6467690), (5, 5174152), (8, 3233845), (10, 2587076), (20, 1293538), (40, 646769), (641, 40360), (1009, 25640), (1282, 20180), (2018, 12820), (2564, 10090), (3205, 8072), (4036, 6410), (5045, 5128)]