320671984

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{5237}}^1$

素因数の和:5377

約数の個数: 40

約数和(自身を含む): 643016880

約数和(自身を除く): 322344896

約数列:

[1, 2, 4, 8, 16, 43, 86, 89, 172, 178, 344, 356, 688, 712, 1424, 3827, 5237, 7654, 10474, 15308, 20948, 30616, 41896, 61232, 83792, 225191, 450382, 466093, 900764, 932186, 1801528, 1864372, 3603056, 3728744, 7457488, 20041999, 40083998, 80167996, 160335992, 320671984]

約数ペア:

[(1, 320671984), (2, 160335992), (4, 80167996), (8, 40083998), (16, 20041999), (43, 7457488), (86, 3728744), (89, 3603056), (172, 1864372), (178, 1801528), (344, 932186), (356, 900764), (688, 466093), (712, 450382), (1424, 225191), (3827, 83792), (5237, 61232), (7654, 41896), (10474, 30616), (15308, 20948)]