261415

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{97}}^1$

素因数の和:127

約数の個数: 24

約数和(自身を含む): 402192

約数和(自身を除く): 140777

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 97, 245, 385, 485, 539, 679, 1067, 2695, 3395, 4753, 5335, 7469, 23765, 37345, 52283, 261415]

約数ペア:

[(1, 261415), (5, 52283), (7, 37345), (11, 23765), (35, 7469), (49, 5335), (55, 4753), (77, 3395), (97, 2695), (245, 1067), (385, 679), (485, 539)]