21107608

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{155203}}^1$

素因数の和:155226

約数の個数: 16

約数和(自身を含む): 41905080

約数和(自身を除く): 20797472

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 155203, 310406, 620812, 1241624, 2638451, 5276902, 10553804, 21107608]

約数ペア:

[(1, 21107608), (2, 10553804), (4, 5276902), (8, 2638451), (17, 1241624), (34, 620812), (68, 310406), (136, 155203)]