278889128

素因数分解:

$2^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{281}}^1\times {\mathrm{479}}^1$

素因数の和:810

約数の個数: 64

約数和(自身を含む): 617241600

約数和(自身を除く): 338352472

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 56, 74, 148, 259, 281, 296, 479, 518, 562, 958, 1036, 1124, 1916, 1967, 2072, 2248, 3353, 3832, 3934, 6706, 7868, 10397, 13412, 15736, 17723, 20794, 26824, 35446, 41588, 70892, 72779, 83176, 124061, 134599, 141784, 145558, 248122, 269198, 291116, 496244, 538396, 582232, 942193, 992488, 1076792, 1884386, 3768772, 4980163, 7537544, 9960326, 19920652, 34861141, 39841304, 69722282, 139444564, 278889128]

約数ペア:

[(1, 278889128), (2, 139444564), (4, 69722282), (7, 39841304), (8, 34861141), (14, 19920652), (28, 9960326), (37, 7537544), (56, 4980163), (74, 3768772), (148, 1884386), (259, 1076792), (281, 992488), (296, 942193), (479, 582232), (518, 538396), (562, 496244), (958, 291116), (1036, 269198), (1124, 248122), (1916, 145558), (1967, 141784), (2072, 134599), (2248, 124061), (3353, 83176), (3832, 72779), (3934, 70892), (6706, 41588), (7868, 35446), (10397, 26824), (13412, 20794), (15736, 17723)]