20509120

素因数分解:

$2^6\times 5^1\times {\mathrm{64091}}^1$

素因数の和:64108

約数の個数: 28

約数和(自身を含む): 48838104

約数和(自身を除く): 28328984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 64091, 128182, 256364, 320455, 512728, 640910, 1025456, 1281820, 2050912, 2563640, 4101824, 5127280, 10254560, 20509120]

約数ペア:

[(1, 20509120), (2, 10254560), (4, 5127280), (5, 4101824), (8, 2563640), (10, 2050912), (16, 1281820), (20, 1025456), (32, 640910), (40, 512728), (64, 320455), (80, 256364), (160, 128182), (320, 64091)]