28128650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{257}}^1$

素因数の和:479

約数の個数: 48

約数和(自身を含む): 57585600

約数和(自身を除く): 29456950

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 199, 257, 275, 398, 514, 550, 995, 1285, 1990, 2189, 2570, 2827, 4378, 4975, 5654, 6425, 9950, 10945, 12850, 14135, 21890, 28270, 51143, 54725, 70675, 102286, 109450, 141350, 255715, 511430, 562573, 1125146, 1278575, 2557150, 2812865, 5625730, 14064325, 28128650]

約数ペア:

[(1, 28128650), (2, 14064325), (5, 5625730), (10, 2812865), (11, 2557150), (22, 1278575), (25, 1125146), (50, 562573), (55, 511430), (110, 255715), (199, 141350), (257, 109450), (275, 102286), (398, 70675), (514, 54725), (550, 51143), (995, 28270), (1285, 21890), (1990, 14135), (2189, 12850), (2570, 10945), (2827, 9950), (4378, 6425), (4975, 5654)]