19511888

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{110863}}^1$

素因数の和:110882

約数の個数: 20

約数和(自身を含む): 41241408

約数和(自身を除く): 21729520

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 110863, 221726, 443452, 886904, 1219493, 1773808, 2438986, 4877972, 9755944, 19511888]

約数ペア:

[(1, 19511888), (2, 9755944), (4, 4877972), (8, 2438986), (11, 1773808), (16, 1219493), (22, 886904), (44, 443452), (88, 221726), (176, 110863)]