278319005

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^2$

素因数の和:393

約数の個数: 24

約数和(自身を含む): 349363872

約数和(自身を除く): 71044867

約数列:

[1, 5, 43, 67, 139, 215, 335, 695, 2881, 5977, 9313, 14405, 19321, 29885, 46565, 96605, 400459, 830803, 1294507, 2002295, 4154015, 6472535, 55663801, 278319005]

約数ペア:

[(1, 278319005), (5, 55663801), (43, 6472535), (67, 4154015), (139, 2002295), (215, 1294507), (335, 830803), (695, 400459), (2881, 96605), (5977, 46565), (9313, 29885), (14405, 19321)]