2566400

素因数分解:

$2^8\times 5^2\times {\mathrm{401}}^1$

素因数の和:427

約数の個数: 54

約数和(自身を含む): 6368082

約数和(自身を除く): 3801682

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 401, 640, 800, 802, 1280, 1600, 1604, 2005, 3200, 3208, 4010, 6400, 6416, 8020, 10025, 12832, 16040, 20050, 25664, 32080, 40100, 51328, 64160, 80200, 102656, 128320, 160400, 256640, 320800, 513280, 641600, 1283200, 2566400]

約数ペア:

[(1, 2566400), (2, 1283200), (4, 641600), (5, 513280), (8, 320800), (10, 256640), (16, 160400), (20, 128320), (25, 102656), (32, 80200), (40, 64160), (50, 51328), (64, 40100), (80, 32080), (100, 25664), (128, 20050), (160, 16040), (200, 12832), (256, 10025), (320, 8020), (400, 6416), (401, 6400), (640, 4010), (800, 3208), (802, 3200), (1280, 2005), (1600, 1604)]