78336640

素因数分解:

$2^7\times 5^1\times {\mathrm{122401}}^1$

素因数の和:122420

約数の個数: 32

約数和(自身を含む): 187275060

約数和(自身を除く): 108938420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 122401, 244802, 489604, 612005, 979208, 1224010, 1958416, 2448020, 3916832, 4896040, 7833664, 9792080, 15667328, 19584160, 39168320, 78336640]

約数ペア:

[(1, 78336640), (2, 39168320), (4, 19584160), (5, 15667328), (8, 9792080), (10, 7833664), (16, 4896040), (20, 3916832), (32, 2448020), (40, 1958416), (64, 1224010), (80, 979208), (128, 612005), (160, 489604), (320, 244802), (640, 122401)]