20461280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18269}}^1$

素因数の和:18291

約数の個数: 48

約数和(自身を含む): 55248480

約数和(自身を除く): 34787200

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, 18269, 36538, 73076, 91345, 127883, 146152, 182690, 255766, 292304, 365380, 511532, 584608, 639415, 730760, 1023064, 1278830, 1461520, 2046128, 2557660, 2923040, 4092256, 5115320, 10230640, 20461280]

約数ペア:

[(1, 20461280), (2, 10230640), (4, 5115320), (5, 4092256), (7, 2923040), (8, 2557660), (10, 2046128), (14, 1461520), (16, 1278830), (20, 1023064), (28, 730760), (32, 639415), (35, 584608), (40, 511532), (56, 365380), (70, 292304), (80, 255766), (112, 182690), (140, 146152), (160, 127883), (224, 91345), (280, 73076), (560, 36538), (1120, 18269)]