142857407

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{1223}}^1$

素因数の和:1319

約数の個数: 32

約数和(自身を含む): 187536384

約数和(自身を除く): 44678977

約数列:

[1, 7, 11, 37, 41, 77, 259, 287, 407, 451, 1223, 1517, 2849, 3157, 8561, 10619, 13453, 16687, 45251, 50143, 94171, 116809, 316757, 351001, 497761, 551573, 1855291, 3484327, 3861011, 12987037, 20408201, 142857407]

約数ペア:

[(1, 142857407), (7, 20408201), (11, 12987037), (37, 3861011), (41, 3484327), (77, 1855291), (259, 551573), (287, 497761), (407, 351001), (451, 316757), (1223, 116809), (1517, 94171), (2849, 50143), (3157, 45251), (8561, 16687), (10619, 13453)]