129291520

素因数分解:

$2^8\times 5^1\times {\mathrm{101009}}^1$

素因数の和:101030

約数の個数: 36

約数和(自身を含む): 309696660

約数和(自身を除く): 180405140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 101009, 202018, 404036, 505045, 808072, 1010090, 1616144, 2020180, 3232288, 4040360, 6464576, 8080720, 12929152, 16161440, 25858304, 32322880, 64645760, 129291520]

約数ペア:

[(1, 129291520), (2, 64645760), (4, 32322880), (5, 25858304), (8, 16161440), (10, 12929152), (16, 8080720), (20, 6464576), (32, 4040360), (40, 3232288), (64, 2020180), (80, 1616144), (128, 1010090), (160, 808072), (256, 505045), (320, 404036), (640, 202018), (1280, 101009)]