20890695

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{198959}}^1$

素因数の和:198974

約数の個数: 16

約数和(自身を含む): 38200320

約数和(自身を除く): 17309625

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 198959, 596877, 994795, 1392713, 2984385, 4178139, 6963565, 20890695]

約数ペア:

[(1, 20890695), (3, 6963565), (5, 4178139), (7, 2984385), (15, 1392713), (21, 994795), (35, 596877), (105, 198959)]