20278400

素因数分解:

$2^7\times 5^2\times {\mathrm{6337}}^1$

素因数の和:6361

約数の個数: 48

約数和(自身を含む): 50101890

約数和(自身を除く): 29823490

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 6337, 12674, 25348, 31685, 50696, 63370, 101392, 126740, 158425, 202784, 253480, 316850, 405568, 506960, 633700, 811136, 1013920, 1267400, 2027840, 2534800, 4055680, 5069600, 10139200, 20278400]

約数ペア:

[(1, 20278400), (2, 10139200), (4, 5069600), (5, 4055680), (8, 2534800), (10, 2027840), (16, 1267400), (20, 1013920), (25, 811136), (32, 633700), (40, 506960), (50, 405568), (64, 316850), (80, 253480), (100, 202784), (128, 158425), (160, 126740), (200, 101392), (320, 63370), (400, 50696), (640, 31685), (800, 25348), (1600, 12674), (3200, 6337)]