20408816

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{587}}^1$

素因数の和:689

約数の個数: 40

約数和(自身を含む): 41341104

約数和(自身を除く): 20932288

約数列:

[1, 2, 4, 8, 16, 41, 53, 82, 106, 164, 212, 328, 424, 587, 656, 848, 1174, 2173, 2348, 4346, 4696, 8692, 9392, 17384, 24067, 31111, 34768, 48134, 62222, 96268, 124444, 192536, 248888, 385072, 497776, 1275551, 2551102, 5102204, 10204408, 20408816]

約数ペア:

[(1, 20408816), (2, 10204408), (4, 5102204), (8, 2551102), (16, 1275551), (41, 497776), (53, 385072), (82, 248888), (106, 192536), (164, 124444), (212, 96268), (328, 62222), (424, 48134), (587, 34768), (656, 31111), (848, 24067), (1174, 17384), (2173, 9392), (2348, 8692), (4346, 4696)]