989450

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1$

素因数の和:287

約数の個数: 48

約数和(自身を含む): 2303424

約数和(自身を除く): 1313974

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 50, 55, 70, 77, 110, 154, 175, 257, 275, 350, 385, 514, 550, 770, 1285, 1799, 1925, 2570, 2827, 3598, 3850, 5654, 6425, 8995, 12850, 14135, 17990, 19789, 28270, 39578, 44975, 70675, 89950, 98945, 141350, 197890, 494725, 989450]

約数ペア:

[(1, 989450), (2, 494725), (5, 197890), (7, 141350), (10, 98945), (11, 89950), (14, 70675), (22, 44975), (25, 39578), (35, 28270), (50, 19789), (55, 17990), (70, 14135), (77, 12850), (110, 8995), (154, 6425), (175, 5654), (257, 3850), (275, 3598), (350, 2827), (385, 2570), (514, 1925), (550, 1799), (770, 1285)]