261698528

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:297

約数の個数: 144

約数和(自身を含む): 661118976

約数和(自身を除く): 399420448

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 31, 32, 52, 56, 62, 91, 104, 112, 124, 169, 182, 208, 217, 223, 224, 248, 338, 364, 403, 416, 434, 446, 496, 676, 728, 806, 868, 892, 992, 1183, 1352, 1456, 1561, 1612, 1736, 1784, 2366, 2704, 2821, 2899, 2912, 3122, 3224, 3472, 3568, 4732, 5239, 5408, 5642, 5798, 6244, 6448, 6913, 6944, 7136, 9464, 10478, 11284, 11596, 12488, 12896, 13826, 18928, 20293, 20956, 22568, 23192, 24976, 27652, 36673, 37687, 37856, 40586, 41912, 45136, 46384, 48391, 49952, 55304, 73346, 75374, 81172, 83824, 89869, 90272, 92768, 96782, 110608, 146692, 150748, 162344, 167648, 179738, 193564, 221216, 263809, 293384, 301496, 324688, 359476, 387128, 527618, 586768, 602992, 629083, 649376, 718952, 774256, 1055236, 1168297, 1173536, 1205984, 1258166, 1437904, 1548512, 2110472, 2336594, 2516332, 2875808, 4220944, 4673188, 5032664, 8178079, 8441888, 9346376, 10065328, 16356158, 18692752, 20130656, 32712316, 37385504, 65424632, 130849264, 261698528]

約数ペア:

[(1, 261698528), (2, 130849264), (4, 65424632), (7, 37385504), (8, 32712316), (13, 20130656), (14, 18692752), (16, 16356158), (26, 10065328), (28, 9346376), (31, 8441888), (32, 8178079), (52, 5032664), (56, 4673188), (62, 4220944), (91, 2875808), (104, 2516332), (112, 2336594), (124, 2110472), (169, 1548512), (182, 1437904), (208, 1258166), (217, 1205984), (223, 1173536), (224, 1168297), (248, 1055236), (338, 774256), (364, 718952), (403, 649376), (416, 629083), (434, 602992), (446, 586768), (496, 527618), (676, 387128), (728, 359476), (806, 324688), (868, 301496), (892, 293384), (992, 263809), (1183, 221216), (1352, 193564), (1456, 179738), (1561, 167648), (1612, 162344), (1736, 150748), (1784, 146692), (2366, 110608), (2704, 96782), (2821, 92768), (2899, 90272), (2912, 89869), (3122, 83824), (3224, 81172), (3472, 75374), (3568, 73346), (4732, 55304), (5239, 49952), (5408, 48391), (5642, 46384), (5798, 45136), (6244, 41912), (6448, 40586), (6913, 37856), (6944, 37687), (7136, 36673), (9464, 27652), (10478, 24976), (11284, 23192), (11596, 22568), (12488, 20956), (12896, 20293), (13826, 18928)]