51278320

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{3221}}^1$

素因数の和:3433

約数の個数: 40

約数和(自身を含む): 119858400

約数和(自身を除く): 68580080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1990, 3184, 3221, 3980, 6442, 7960, 12884, 15920, 16105, 25768, 32210, 51536, 64420, 128840, 257680, 640979, 1281958, 2563916, 3204895, 5127832, 6409790, 10255664, 12819580, 25639160, 51278320]

約数ペア:

[(1, 51278320), (2, 25639160), (4, 12819580), (5, 10255664), (8, 6409790), (10, 5127832), (16, 3204895), (20, 2563916), (40, 1281958), (80, 640979), (199, 257680), (398, 128840), (796, 64420), (995, 51536), (1592, 32210), (1990, 25768), (3184, 16105), (3221, 15920), (3980, 12884), (6442, 7960)]