28779905

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{181}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 44815680

約数和(自身を除く): 16035775

約数列:

[1, 5, 7, 11, 35, 49, 55, 59, 77, 181, 245, 295, 385, 413, 539, 649, 905, 1267, 1991, 2065, 2695, 2891, 3245, 4543, 6335, 8869, 9955, 10679, 13937, 14455, 22715, 31801, 44345, 53395, 69685, 74753, 97559, 117469, 159005, 373765, 487795, 523271, 587345, 822283, 2616355, 4111415, 5755981, 28779905]

約数ペア:

[(1, 28779905), (5, 5755981), (7, 4111415), (11, 2616355), (35, 822283), (49, 587345), (55, 523271), (59, 487795), (77, 373765), (181, 159005), (245, 117469), (295, 97559), (385, 74753), (413, 69685), (539, 53395), (649, 44345), (905, 31801), (1267, 22715), (1991, 14455), (2065, 13937), (2695, 10679), (2891, 9955), (3245, 8869), (4543, 6335)]