21308344

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{156679}}^1$

素因数の和:156702

約数の個数: 16

約数和(自身を含む): 42303600

約数和(自身を除く): 20995256

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 156679, 313358, 626716, 1253432, 2663543, 5327086, 10654172, 21308344]

約数ペア:

[(1, 21308344), (2, 10654172), (4, 5327086), (8, 2663543), (17, 1253432), (34, 626716), (68, 313358), (136, 156679)]