21126400

素因数分解:

$2^8\times 5^2\times {\mathrm{3301}}^1$

素因数の和:3327

約数の個数: 54

約数和(自身を含む): 52306982

約数和(自身を除く): 31180582

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, 800, 1280, 1600, 3200, 3301, 6400, 6602, 13204, 16505, 26408, 33010, 52816, 66020, 82525, 105632, 132040, 165050, 211264, 264080, 330100, 422528, 528160, 660200, 845056, 1056320, 1320400, 2112640, 2640800, 4225280, 5281600, 10563200, 21126400]

約数ペア:

[(1, 21126400), (2, 10563200), (4, 5281600), (5, 4225280), (8, 2640800), (10, 2112640), (16, 1320400), (20, 1056320), (25, 845056), (32, 660200), (40, 528160), (50, 422528), (64, 330100), (80, 264080), (100, 211264), (128, 165050), (160, 132040), (200, 105632), (256, 82525), (320, 66020), (400, 52816), (640, 33010), (800, 26408), (1280, 16505), (1600, 13204), (3200, 6602), (3301, 6400)]