25664000

素因数分解:

$2^9\times 5^3\times {\mathrm{401}}^1$

素因数の和:434

約数の個数: 80

約数和(自身を含む): 64154376

約数和(自身を除く): 38490376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 401, 500, 512, 640, 800, 802, 1000, 1280, 1600, 1604, 2000, 2005, 2560, 3200, 3208, 4000, 4010, 6400, 6416, 8000, 8020, 10025, 12800, 12832, 16000, 16040, 20050, 25664, 32000, 32080, 40100, 50125, 51328, 64000, 64160, 80200, 100250, 102656, 128320, 160400, 200500, 205312, 256640, 320800, 401000, 513280, 641600, 802000, 1026560, 1283200, 1604000, 2566400, 3208000, 5132800, 6416000, 12832000, 25664000]

約数ペア:

[(1, 25664000), (2, 12832000), (4, 6416000), (5, 5132800), (8, 3208000), (10, 2566400), (16, 1604000), (20, 1283200), (25, 1026560), (32, 802000), (40, 641600), (50, 513280), (64, 401000), (80, 320800), (100, 256640), (125, 205312), (128, 200500), (160, 160400), (200, 128320), (250, 102656), (256, 100250), (320, 80200), (400, 64160), (401, 64000), (500, 51328), (512, 50125), (640, 40100), (800, 32080), (802, 32000), (1000, 25664), (1280, 20050), (1600, 16040), (1604, 16000), (2000, 12832), (2005, 12800), (2560, 10025), (3200, 8020), (3208, 8000), (4000, 6416), (4010, 6400)]