19911424

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1$

素因数の和:253

約数の個数: 72

約数和(自身を含む): 44412032

約数和(自身を除く): 24500608

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 128, 193, 208, 248, 256, 386, 403, 416, 496, 772, 806, 832, 992, 1544, 1612, 1664, 1984, 2509, 3088, 3224, 3328, 3968, 5018, 5983, 6176, 6448, 7936, 10036, 11966, 12352, 12896, 20072, 23932, 24704, 25792, 40144, 47864, 49408, 51584, 77779, 80288, 95728, 103168, 155558, 160576, 191456, 311116, 321152, 382912, 622232, 642304, 765824, 1244464, 1531648, 2488928, 4977856, 9955712, 19911424]

約数ペア:

[(1, 19911424), (2, 9955712), (4, 4977856), (8, 2488928), (13, 1531648), (16, 1244464), (26, 765824), (31, 642304), (32, 622232), (52, 382912), (62, 321152), (64, 311116), (104, 191456), (124, 160576), (128, 155558), (193, 103168), (208, 95728), (248, 80288), (256, 77779), (386, 51584), (403, 49408), (416, 47864), (496, 40144), (772, 25792), (806, 24704), (832, 23932), (992, 20072), (1544, 12896), (1612, 12352), (1664, 11966), (1984, 10036), (2509, 7936), (3088, 6448), (3224, 6176), (3328, 5983), (3968, 5018)]