51087280

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{3209}}^1$

素因数の和:3421

約数の個数: 40

約数和(自身を含む): 119412000

約数和(自身を除く): 68324720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1990, 3184, 3209, 3980, 6418, 7960, 12836, 15920, 16045, 25672, 32090, 51344, 64180, 128360, 256720, 638591, 1277182, 2554364, 3192955, 5108728, 6385910, 10217456, 12771820, 25543640, 51087280]

約数ペア:

[(1, 51087280), (2, 25543640), (4, 12771820), (5, 10217456), (8, 6385910), (10, 5108728), (16, 3192955), (20, 2554364), (40, 1277182), (80, 638591), (199, 256720), (398, 128360), (796, 64180), (995, 51344), (1592, 32090), (1990, 25672), (3184, 16045), (3209, 15920), (3980, 12836), (6418, 7960)]