31553440

素因数分解:

$2^5\times 5^1\times {\mathrm{199}}^1\times {\mathrm{991}}^1$

素因数の和:1205

約数の個数: 48

約数和(自身を含む): 74995200

約数和(自身を除く): 43441760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 199, 398, 796, 991, 995, 1592, 1982, 1990, 3184, 3964, 3980, 4955, 6368, 7928, 7960, 9910, 15856, 15920, 19820, 31712, 31840, 39640, 79280, 158560, 197209, 394418, 788836, 986045, 1577672, 1972090, 3155344, 3944180, 6310688, 7888360, 15776720, 31553440]

約数ペア:

[(1, 31553440), (2, 15776720), (4, 7888360), (5, 6310688), (8, 3944180), (10, 3155344), (16, 1972090), (20, 1577672), (32, 986045), (40, 788836), (80, 394418), (160, 197209), (199, 158560), (398, 79280), (796, 39640), (991, 31840), (995, 31712), (1592, 19820), (1982, 15920), (1990, 15856), (3184, 9910), (3964, 7960), (3980, 7928), (4955, 6368)]