128880128

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{67}}^1$

素因数の和:132

約数の個数: 120

約数和(自身を含む): 298986072

約数和(自身を除く): 170105944

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 64, 67, 68, 104, 128, 134, 136, 208, 221, 256, 268, 272, 289, 416, 442, 512, 536, 544, 578, 832, 871, 884, 1072, 1088, 1139, 1156, 1664, 1742, 1768, 2144, 2176, 2278, 2312, 3328, 3484, 3536, 3757, 4288, 4352, 4556, 4624, 6656, 6968, 7072, 7514, 8576, 8704, 9112, 9248, 13936, 14144, 14807, 15028, 17152, 18224, 18496, 19363, 27872, 28288, 29614, 30056, 34304, 36448, 36992, 38726, 55744, 56576, 59228, 60112, 72896, 73984, 77452, 111488, 113152, 118456, 120224, 145792, 147968, 154904, 222976, 236912, 240448, 251719, 291584, 309808, 445952, 473824, 480896, 503438, 583168, 619616, 947648, 961792, 1006876, 1239232, 1895296, 1923584, 2013752, 2478464, 3790592, 4027504, 4956928, 7581184, 8055008, 9913856, 16110016, 32220032, 64440064, 128880128]

約数ペア:

[(1, 128880128), (2, 64440064), (4, 32220032), (8, 16110016), (13, 9913856), (16, 8055008), (17, 7581184), (26, 4956928), (32, 4027504), (34, 3790592), (52, 2478464), (64, 2013752), (67, 1923584), (68, 1895296), (104, 1239232), (128, 1006876), (134, 961792), (136, 947648), (208, 619616), (221, 583168), (256, 503438), (268, 480896), (272, 473824), (289, 445952), (416, 309808), (442, 291584), (512, 251719), (536, 240448), (544, 236912), (578, 222976), (832, 154904), (871, 147968), (884, 145792), (1072, 120224), (1088, 118456), (1139, 113152), (1156, 111488), (1664, 77452), (1742, 73984), (1768, 72896), (2144, 60112), (2176, 59228), (2278, 56576), (2312, 55744), (3328, 38726), (3484, 36992), (3536, 36448), (3757, 34304), (4288, 30056), (4352, 29614), (4556, 28288), (4624, 27872), (6656, 19363), (6968, 18496), (7072, 18224), (7514, 17152), (8576, 15028), (8704, 14807), (9112, 14144), (9248, 13936)]