279979777

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 371165760

約数和(自身を除く): 91185983

約数列:

[1, 7, 11, 37, 49, 77, 101, 139, 259, 407, 539, 707, 973, 1111, 1529, 1813, 2849, 3737, 4949, 5143, 6811, 7777, 10703, 14039, 19943, 26159, 36001, 41107, 54439, 56573, 74921, 98273, 154429, 183113, 252007, 287749, 396011, 519443, 687911, 1081003, 2014243, 2772077, 3636101, 5713873, 7567021, 25452707, 39997111, 279979777]

約数ペア:

[(1, 279979777), (7, 39997111), (11, 25452707), (37, 7567021), (49, 5713873), (77, 3636101), (101, 2772077), (139, 2014243), (259, 1081003), (407, 687911), (539, 519443), (707, 396011), (973, 287749), (1111, 252007), (1529, 183113), (1813, 154429), (2849, 98273), (3737, 74921), (4949, 56573), (5143, 54439), (6811, 41107), (7777, 36001), (10703, 26159), (14039, 19943)]