4102400

素因数分解:

$2^8\times 5^2\times {\mathrm{641}}^1$

素因数の和:667

約数の個数: 54

約数和(自身を含む): 10169922

約数和(自身を除く): 6067522

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 641, 800, 1280, 1282, 1600, 2564, 3200, 3205, 5128, 6400, 6410, 10256, 12820, 16025, 20512, 25640, 32050, 41024, 51280, 64100, 82048, 102560, 128200, 164096, 205120, 256400, 410240, 512800, 820480, 1025600, 2051200, 4102400]

約数ペア:

[(1, 4102400), (2, 2051200), (4, 1025600), (5, 820480), (8, 512800), (10, 410240), (16, 256400), (20, 205120), (25, 164096), (32, 128200), (40, 102560), (50, 82048), (64, 64100), (80, 51280), (100, 41024), (128, 32050), (160, 25640), (200, 20512), (256, 16025), (320, 12820), (400, 10256), (640, 6410), (641, 6400), (800, 5128), (1280, 3205), (1282, 3200), (1600, 2564)]