388996888

素因数分解:

$2^3\times 7^2\times {\mathrm{389}}^1\times {\mathrm{2551}}^1$

素因数の和:2960

約数の個数: 48

約数和(自身を含む): 850964400

約数和(自身を除く): 461967512

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 389, 392, 778, 1556, 2551, 2723, 3112, 5102, 5446, 10204, 10892, 17857, 19061, 20408, 21784, 35714, 38122, 71428, 76244, 124999, 142856, 152488, 249998, 499996, 992339, 999992, 1984678, 3969356, 6946373, 7938712, 13892746, 27785492, 48624611, 55570984, 97249222, 194498444, 388996888]

約数ペア:

[(1, 388996888), (2, 194498444), (4, 97249222), (7, 55570984), (8, 48624611), (14, 27785492), (28, 13892746), (49, 7938712), (56, 6946373), (98, 3969356), (196, 1984678), (389, 999992), (392, 992339), (778, 499996), (1556, 249998), (2551, 152488), (2723, 142856), (3112, 124999), (5102, 76244), (5446, 71428), (10204, 38122), (10892, 35714), (17857, 21784), (19061, 20408)]