20687216

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{117541}}^1$

素因数の和:117560

約数の個数: 20

約数和(自身を含む): 43725624

約数和(自身を除く): 23038408

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 117541, 235082, 470164, 940328, 1292951, 1880656, 2585902, 5171804, 10343608, 20687216]

約数ペア:

[(1, 20687216), (2, 10343608), (4, 5171804), (8, 2585902), (11, 1880656), (16, 1292951), (22, 940328), (44, 470164), (88, 235082), (176, 117541)]