4091440

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{257}}^1$

素因数の和:469

約数の個数: 40

約数和(自身を含む): 9597600

約数和(自身を除く): 5506160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 257, 398, 514, 796, 995, 1028, 1285, 1592, 1990, 2056, 2570, 3184, 3980, 4112, 5140, 7960, 10280, 15920, 20560, 51143, 102286, 204572, 255715, 409144, 511430, 818288, 1022860, 2045720, 4091440]

約数ペア:

[(1, 4091440), (2, 2045720), (4, 1022860), (5, 818288), (8, 511430), (10, 409144), (16, 255715), (20, 204572), (40, 102286), (80, 51143), (199, 20560), (257, 15920), (398, 10280), (514, 7960), (796, 5140), (995, 4112), (1028, 3980), (1285, 3184), (1592, 2570), (1990, 2056)]