20257904

素因数分解:

$2^4\times {\mathrm{197}}^1\times {\mathrm{6427}}^1$

素因数の和:6632

約数の個数: 20

約数和(自身を含む): 39455064

約数和(自身を除く): 19197160

約数列:

[1, 2, 4, 8, 16, 197, 394, 788, 1576, 3152, 6427, 12854, 25708, 51416, 102832, 1266119, 2532238, 5064476, 10128952, 20257904]

約数ペア:

[(1, 20257904), (2, 10128952), (4, 5064476), (8, 2532238), (16, 1266119), (197, 102832), (394, 51416), (788, 25708), (1576, 12854), (3152, 6427)]