21604255

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1\times {\mathrm{617}}^1$

素因数の和:818

約数の個数: 16

約数和(自身を含む): 26697600

約数和(自身を除く): 5093345

約数列:

[1, 5, 47, 149, 235, 617, 745, 3085, 7003, 28999, 35015, 91933, 144995, 459665, 4320851, 21604255]

約数ペア:

[(1, 21604255), (5, 4320851), (47, 459665), (149, 144995), (235, 91933), (617, 35015), (745, 28999), (3085, 7003)]