143920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{257}}^1$

素因数の和:277

約数の個数: 40

約数和(自身を含む): 383904

約数和(自身を除く): 239984

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 257, 280, 514, 560, 1028, 1285, 1799, 2056, 2570, 3598, 4112, 5140, 7196, 8995, 10280, 14392, 17990, 20560, 28784, 35980, 71960, 143920]

約数ペア:

[(1, 143920), (2, 71960), (4, 35980), (5, 28784), (7, 20560), (8, 17990), (10, 14392), (14, 10280), (16, 8995), (20, 7196), (28, 5140), (35, 4112), (40, 3598), (56, 2570), (70, 2056), (80, 1799), (112, 1285), (140, 1028), (257, 560), (280, 514)]