28210400

素因数分解:

$2^5\times 5^2\times {\mathrm{179}}^1\times {\mathrm{197}}^1$

素因数の和:396

約数の個数: 72

約数和(自身を含む): 69604920

約数和(自身を除く): 41394520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 179, 197, 200, 358, 394, 400, 716, 788, 800, 895, 985, 1432, 1576, 1790, 1970, 2864, 3152, 3580, 3940, 4475, 4925, 5728, 6304, 7160, 7880, 8950, 9850, 14320, 15760, 17900, 19700, 28640, 31520, 35263, 35800, 39400, 70526, 71600, 78800, 141052, 143200, 157600, 176315, 282104, 352630, 564208, 705260, 881575, 1128416, 1410520, 1763150, 2821040, 3526300, 5642080, 7052600, 14105200, 28210400]

約数ペア:

[(1, 28210400), (2, 14105200), (4, 7052600), (5, 5642080), (8, 3526300), (10, 2821040), (16, 1763150), (20, 1410520), (25, 1128416), (32, 881575), (40, 705260), (50, 564208), (80, 352630), (100, 282104), (160, 176315), (179, 157600), (197, 143200), (200, 141052), (358, 78800), (394, 71600), (400, 70526), (716, 39400), (788, 35800), (800, 35263), (895, 31520), (985, 28640), (1432, 19700), (1576, 17900), (1790, 15760), (1970, 14320), (2864, 9850), (3152, 8950), (3580, 7880), (3940, 7160), (4475, 6304), (4925, 5728)]