256917336

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{263}}^1$

素因数の和:417

約数の個数: 128

約数和(自身を含む): 723824640

約数和(自身を除く): 466907304

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 31, 39, 52, 62, 78, 93, 101, 104, 124, 156, 186, 202, 248, 263, 303, 312, 372, 403, 404, 526, 606, 744, 789, 806, 808, 1052, 1209, 1212, 1313, 1578, 1612, 2104, 2418, 2424, 2626, 3131, 3156, 3224, 3419, 3939, 4836, 5252, 6262, 6312, 6838, 7878, 8153, 9393, 9672, 10257, 10504, 12524, 13676, 15756, 16306, 18786, 20514, 24459, 25048, 26563, 27352, 31512, 32612, 37572, 40703, 41028, 48918, 53126, 65224, 75144, 79689, 81406, 82056, 97836, 105989, 106252, 122109, 159378, 162812, 195672, 211978, 212504, 244218, 317967, 318756, 325624, 345319, 423956, 488436, 635934, 637512, 690638, 823453, 847912, 976872, 1035957, 1271868, 1381276, 1646906, 2071914, 2470359, 2543736, 2762552, 3293812, 4143828, 4940718, 6587624, 8287656, 9881436, 10704889, 19762872, 21409778, 32114667, 42819556, 64229334, 85639112, 128458668, 256917336]

約数ペア:

[(1, 256917336), (2, 128458668), (3, 85639112), (4, 64229334), (6, 42819556), (8, 32114667), (12, 21409778), (13, 19762872), (24, 10704889), (26, 9881436), (31, 8287656), (39, 6587624), (52, 4940718), (62, 4143828), (78, 3293812), (93, 2762552), (101, 2543736), (104, 2470359), (124, 2071914), (156, 1646906), (186, 1381276), (202, 1271868), (248, 1035957), (263, 976872), (303, 847912), (312, 823453), (372, 690638), (403, 637512), (404, 635934), (526, 488436), (606, 423956), (744, 345319), (789, 325624), (806, 318756), (808, 317967), (1052, 244218), (1209, 212504), (1212, 211978), (1313, 195672), (1578, 162812), (1612, 159378), (2104, 122109), (2418, 106252), (2424, 105989), (2626, 97836), (3131, 82056), (3156, 81406), (3224, 79689), (3419, 75144), (3939, 65224), (4836, 53126), (5252, 48918), (6262, 41028), (6312, 40703), (6838, 37572), (7878, 32612), (8153, 31512), (9393, 27352), (9672, 26563), (10257, 25048), (10504, 24459), (12524, 20514), (13676, 18786), (15756, 16306)]