20505088

素因数分解:

$2^9\times {\mathrm{29}}^1\times {\mathrm{1381}}^1$

素因数の和:1428

約数の個数: 40

約数和(自身を含む): 42413580

約数和(自身を除く): 21908492

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 64, 116, 128, 232, 256, 464, 512, 928, 1381, 1856, 2762, 3712, 5524, 7424, 11048, 14848, 22096, 40049, 44192, 80098, 88384, 160196, 176768, 320392, 353536, 640784, 707072, 1281568, 2563136, 5126272, 10252544, 20505088]

約数ペア:

[(1, 20505088), (2, 10252544), (4, 5126272), (8, 2563136), (16, 1281568), (29, 707072), (32, 640784), (58, 353536), (64, 320392), (116, 176768), (128, 160196), (232, 88384), (256, 80098), (464, 44192), (512, 40049), (928, 22096), (1381, 14848), (1856, 11048), (2762, 7424), (3712, 5524)]