51355600

素因数分解:

$2^4\times 5^2\times {\mathrm{128389}}^1$

素因数の和:128407

約数の個数: 30

約数和(自身を含む): 123382790

約数和(自身を除く): 72027190

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 128389, 256778, 513556, 641945, 1027112, 1283890, 2054224, 2567780, 3209725, 5135560, 6419450, 10271120, 12838900, 25677800, 51355600]

約数ペア:

[(1, 51355600), (2, 25677800), (4, 12838900), (5, 10271120), (8, 6419450), (10, 5135560), (16, 3209725), (20, 2567780), (25, 2054224), (40, 1283890), (50, 1027112), (80, 641945), (100, 513556), (200, 256778), (400, 128389)]