18519885

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{563}}^1$

素因数の和:634

約数の個数: 48

約数和(自身を含む): 34841664

約数和(自身を除く): 16321779

約数列:

[1, 3, 5, 9, 15, 17, 43, 45, 51, 85, 129, 153, 215, 255, 387, 563, 645, 731, 765, 1689, 1935, 2193, 2815, 3655, 5067, 6579, 8445, 9571, 10965, 24209, 25335, 28713, 32895, 47855, 72627, 86139, 121045, 143565, 217881, 363135, 411553, 430695, 1089405, 1234659, 2057765, 3703977, 6173295, 18519885]

約数ペア:

[(1, 18519885), (3, 6173295), (5, 3703977), (9, 2057765), (15, 1234659), (17, 1089405), (43, 430695), (45, 411553), (51, 363135), (85, 217881), (129, 143565), (153, 121045), (215, 86139), (255, 72627), (387, 47855), (563, 32895), (645, 28713), (731, 25335), (765, 24209), (1689, 10965), (1935, 9571), (2193, 8445), (2815, 6579), (3655, 5067)]