64339840

素因数分解:

$2^7\times 5^1\times {\mathrm{229}}^1\times {\mathrm{439}}^1$

素因数の和:687

約数の個数: 64

約数和(自身を含む): 154836000

約数和(自身を除く): 90496160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 229, 320, 439, 458, 640, 878, 916, 1145, 1756, 1832, 2195, 2290, 3512, 3664, 4390, 4580, 7024, 7328, 8780, 9160, 14048, 14656, 17560, 18320, 28096, 29312, 35120, 36640, 56192, 70240, 73280, 100531, 140480, 146560, 201062, 280960, 402124, 502655, 804248, 1005310, 1608496, 2010620, 3216992, 4021240, 6433984, 8042480, 12867968, 16084960, 32169920, 64339840]

約数ペア:

[(1, 64339840), (2, 32169920), (4, 16084960), (5, 12867968), (8, 8042480), (10, 6433984), (16, 4021240), (20, 3216992), (32, 2010620), (40, 1608496), (64, 1005310), (80, 804248), (128, 502655), (160, 402124), (229, 280960), (320, 201062), (439, 146560), (458, 140480), (640, 100531), (878, 73280), (916, 70240), (1145, 56192), (1756, 36640), (1832, 35120), (2195, 29312), (2290, 28096), (3512, 18320), (3664, 17560), (4390, 14656), (4580, 14048), (7024, 9160), (7328, 8780)]