19912976

素因数分解:

$2^4\times {\mathrm{277}}^1\times {\mathrm{4493}}^1$

素因数の和:4778

約数の個数: 20

約数和(自身を含む): 38729292

約数和(自身を除く): 18816316

約数列:

[1, 2, 4, 8, 16, 277, 554, 1108, 2216, 4432, 4493, 8986, 17972, 35944, 71888, 1244561, 2489122, 4978244, 9956488, 19912976]

約数ペア:

[(1, 19912976), (2, 9956488), (4, 4978244), (8, 2489122), (16, 1244561), (277, 71888), (554, 35944), (1108, 17972), (2216, 8986), (4432, 4493)]