28657765.000000000

素因数分解:

$2^6\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{631}}^1$

素因数の和:694

約数の個数: 112

約数和(自身を含む): 287666176

約数和(自身を除く): 173742912

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 31, 32, 52, 56, 62, 64, 91, 104, 112, 124, 182, 208, 217, 224, 248, 364, 403, 416, 434, 448, 496, 631, 728, 806, 832, 868, 992, 1262, 1456, 1612, 1736, 1984, 2524, 2821, 2912, 3224, 3472, 4417, 5048, 5642, 5824, 6448, 6944, 8203, 8834, 10096, 11284, 12896, 13888, 16406, 17668, 19561, 20192, 22568, 25792, 32812, 35336, 39122, 40384, 45136, 57421, 65624, 70672, 78244, 90272, 114842, 131248, 136927, 141344, 156488, 180544, 229684, 254293, 262496, 273854, 282688, 312976, 459368, 508586, 524992, 547708, 625952, 918736, 1017172, 1095416, 1251904, 1780051, 1837472, 2034344, 2190832, 3560102, 3674944, 4068688, 4381664, 7120204, 8137376, 8763328, 14240408, 16274752, 28480816, 56961632, 113923264]

約数ペア:

[(1, 113923264), (2, 56961632), (4, 28480816), (7, 16274752), (8, 14240408), (13, 8763328), (14, 8137376), (16, 7120204), (26, 4381664), (28, 4068688), (31, 3674944), (32, 3560102), (52, 2190832), (56, 2034344), (62, 1837472), (64, 1780051), (91, 1251904), (104, 1095416), (112, 1017172), (124, 918736), (182, 625952), (208, 547708), (217, 524992), (224, 508586), (248, 459368), (364, 312976), (403, 282688), (416, 273854), (434, 262496), (448, 254293), (496, 229684), (631, 180544), (728, 156488), (806, 141344), (832, 136927), (868, 131248), (992, 114842), (1262, 90272), (1456, 78244), (1612, 70672), (1736, 65624), (1984, 57421), (2524, 45136), (2821, 40384), (2912, 39122), (3224, 35336), (3472, 32812), (4417, 25792), (5048, 22568), (5642, 20192), (5824, 19561), (6448, 17668), (6944, 16406), (8203, 13888), (8834, 12896), (10096, 11284)]