64737440

素因数分解:

$2^5\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1009}}^1$

素因数の和:1425

約数の個数: 48

約数和(自身を含む): 153475560

約数和(自身を除く): 88738120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 401, 802, 1009, 1604, 2005, 2018, 3208, 4010, 4036, 5045, 6416, 8020, 8072, 10090, 12832, 16040, 16144, 20180, 32080, 32288, 40360, 64160, 80720, 161440, 404609, 809218, 1618436, 2023045, 3236872, 4046090, 6473744, 8092180, 12947488, 16184360, 32368720, 64737440]

約数ペア:

[(1, 64737440), (2, 32368720), (4, 16184360), (5, 12947488), (8, 8092180), (10, 6473744), (16, 4046090), (20, 3236872), (32, 2023045), (40, 1618436), (80, 809218), (160, 404609), (401, 161440), (802, 80720), (1009, 64160), (1604, 40360), (2005, 32288), (2018, 32080), (3208, 20180), (4010, 16144), (4036, 16040), (5045, 12832), (6416, 10090), (8020, 8072)]