20091520

素因数分解:

$2^7\times 5^1\times {\mathrm{31393}}^1$

素因数の和:31412

約数の個数: 32

約数和(自身を含む): 48032820

約数和(自身を除く): 27941300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 31393, 62786, 125572, 156965, 251144, 313930, 502288, 627860, 1004576, 1255720, 2009152, 2511440, 4018304, 5022880, 10045760, 20091520]

約数ペア:

[(1, 20091520), (2, 10045760), (4, 5022880), (5, 4018304), (8, 2511440), (10, 2009152), (16, 1255720), (20, 1004576), (32, 627860), (40, 502288), (64, 313930), (80, 251144), (128, 156965), (160, 125572), (320, 62786), (640, 31393)]