51328000

素因数分解:

$2^{10}\times 5^3\times {\mathrm{401}}^1$

素因数の和:436

約数の個数: 88

約数和(自身を含む): 128371464

約数和(自身を除く): 77043464

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, 1024, 1280, 1600, 1604, 2000, 2005, 2560, 3200, 3208, 4000, 4010, 5120, 6400, 6416, 8000, 8020, 10025, 12800, 12832, 16000, 16040, 20050, 25600, 25664, 32000, 32080, 40100, 50125, 51328, 64000, 64160, 80200, 100250, 102656, 128000, 128320, 160400, 200500, 205312, 256640, 320800, 401000, 410624, 513280, 641600, 802000, 1026560, 1283200, 1604000, 2053120, 2566400, 3208000, 5132800, 6416000, 10265600, 12832000, 25664000, 51328000]

約数ペア:

[(1, 51328000), (2, 25664000), (4, 12832000), (5, 10265600), (8, 6416000), (10, 5132800), (16, 3208000), (20, 2566400), (25, 2053120), (32, 1604000), (40, 1283200), (50, 1026560), (64, 802000), (80, 641600), (100, 513280), (125, 410624), (128, 401000), (160, 320800), (200, 256640), (250, 205312), (256, 200500), (320, 160400), (400, 128320), (401, 128000), (500, 102656), (512, 100250), (640, 80200), (800, 64160), (802, 64000), (1000, 51328), (1024, 50125), (1280, 40100), (1600, 32080), (1604, 32000), (2000, 25664), (2005, 25600), (2560, 20050), (3200, 16040), (3208, 16000), (4000, 12832), (4010, 12800), (5120, 10025), (6400, 8020), (6416, 8000)]