21854768

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{105071}}^1$

素因数の和:105092

約数の個数: 20

約数和(自身を含む): 45601248

約数和(自身を除く): 23746480

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 105071, 210142, 420284, 840568, 1365923, 1681136, 2731846, 5463692, 10927384, 21854768]

約数ペア:

[(1, 21854768), (2, 10927384), (4, 5463692), (8, 2731846), (13, 1681136), (16, 1365923), (26, 840568), (52, 420284), (104, 210142), (208, 105071)]