20327680

素因数分解:

$2^8\times 5^1\times {\mathrm{15881}}^1$

素因数の和:15902

約数の個数: 36

約数和(自身を含む): 48694212

約数和(自身を除く): 28366532

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 15881, 31762, 63524, 79405, 127048, 158810, 254096, 317620, 508192, 635240, 1016384, 1270480, 2032768, 2540960, 4065536, 5081920, 10163840, 20327680]

約数ペア:

[(1, 20327680), (2, 10163840), (4, 5081920), (5, 4065536), (8, 2540960), (10, 2032768), (16, 1270480), (20, 1016384), (32, 635240), (40, 508192), (64, 317620), (80, 254096), (128, 158810), (160, 127048), (256, 79405), (320, 63524), (640, 31762), (1280, 15881)]