21089605

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{5279}}^1$

素因数の和:5348

約数の個数: 16

約数和(自身を含む): 27371520

約数和(自身を除く): 6281915

約数列:

[1, 5, 17, 47, 85, 235, 799, 3995, 5279, 26395, 89743, 248113, 448715, 1240565, 4217921, 21089605]

約数ペア:

[(1, 21089605), (5, 4217921), (17, 1240565), (47, 448715), (85, 248113), (235, 89743), (799, 26395), (3995, 5279)]