20497120

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18301}}^1$

素因数の和:18323

約数の個数: 48

約数和(自身を含む): 55345248

約数和(自身を除く): 34848128

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18301, 36602, 73204, 91505, 128107, 146408, 183010, 256214, 292816, 366020, 512428, 585632, 640535, 732040, 1024856, 1281070, 1464080, 2049712, 2562140, 2928160, 4099424, 5124280, 10248560, 20497120]

約数ペア:

[(1, 20497120), (2, 10248560), (4, 5124280), (5, 4099424), (7, 2928160), (8, 2562140), (10, 2049712), (14, 1464080), (16, 1281070), (20, 1024856), (28, 732040), (32, 640535), (35, 585632), (40, 512428), (56, 366020), (70, 292816), (80, 256214), (112, 183010), (140, 146408), (160, 128107), (224, 91505), (280, 73204), (560, 36602), (1120, 18301)]