20128640

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{4493}}^1$

素因数の和:4519

約数の個数: 64

約数和(自身を含む): 55006560

約数和(自身を除く): 34877920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 4493, 8986, 17972, 22465, 31451, 35944, 44930, 62902, 71888, 89860, 125804, 143776, 157255, 179720, 251608, 287552, 314510, 359440, 503216, 575104, 629020, 718880, 1006432, 1258040, 1437760, 2012864, 2516080, 2875520, 4025728, 5032160, 10064320, 20128640]

約数ペア:

[(1, 20128640), (2, 10064320), (4, 5032160), (5, 4025728), (7, 2875520), (8, 2516080), (10, 2012864), (14, 1437760), (16, 1258040), (20, 1006432), (28, 718880), (32, 629020), (35, 575104), (40, 503216), (56, 359440), (64, 314510), (70, 287552), (80, 251608), (112, 179720), (128, 157255), (140, 143776), (160, 125804), (224, 89860), (280, 71888), (320, 62902), (448, 44930), (560, 35944), (640, 31451), (896, 22465), (1120, 17972), (2240, 8986), (4480, 4493)]