64320640

素因数分解:

$2^7\times 5^1\times {\mathrm{100501}}^1$

素因数の和:100520

約数の個数: 32

約数和(自身を含む): 153768060

約数和(自身を除く): 89447420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 100501, 201002, 402004, 502505, 804008, 1005010, 1608016, 2010020, 3216032, 4020040, 6432064, 8040080, 12864128, 16080160, 32160320, 64320640]

約数ペア:

[(1, 64320640), (2, 32160320), (4, 16080160), (5, 12864128), (8, 8040080), (10, 6432064), (16, 4020040), (20, 3216032), (32, 2010020), (40, 1608016), (64, 1005010), (80, 804008), (128, 502505), (160, 402004), (320, 201002), (640, 100501)]