18415460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{661}}^1$

素因数の和:876

約数の個数: 48

約数和(自身を含む): 44486400

約数和(自身を除く): 26070940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 661, 796, 995, 1322, 1393, 1990, 2644, 2786, 3305, 3980, 4627, 5572, 6610, 6965, 9254, 13220, 13930, 18508, 23135, 27860, 46270, 92540, 131539, 263078, 526156, 657695, 920773, 1315390, 1841546, 2630780, 3683092, 4603865, 9207730, 18415460]

約数ペア:

[(1, 18415460), (2, 9207730), (4, 4603865), (5, 3683092), (7, 2630780), (10, 1841546), (14, 1315390), (20, 920773), (28, 657695), (35, 526156), (70, 263078), (140, 131539), (199, 92540), (398, 46270), (661, 27860), (796, 23135), (995, 18508), (1322, 13930), (1393, 13220), (1990, 9254), (2644, 6965), (2786, 6610), (3305, 5572), (3980, 4627)]