78320384

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:257

約数の個数: 72

約数和(自身を含む): 164828160

約数和(自身を除く): 86507776

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 71, 124, 128, 139, 142, 248, 256, 278, 284, 496, 556, 568, 992, 1112, 1136, 1984, 2201, 2224, 2272, 3968, 4309, 4402, 4448, 4544, 7936, 8618, 8804, 8896, 9088, 9869, 17236, 17608, 17792, 18176, 19738, 34472, 35216, 35584, 39476, 68944, 70432, 78952, 137888, 140864, 157904, 275776, 281728, 305939, 315808, 551552, 563456, 611878, 631616, 1103104, 1223756, 1263232, 2447512, 2526464, 4895024, 9790048, 19580096, 39160192, 78320384]

約数ペア:

[(1, 78320384), (2, 39160192), (4, 19580096), (8, 9790048), (16, 4895024), (31, 2526464), (32, 2447512), (62, 1263232), (64, 1223756), (71, 1103104), (124, 631616), (128, 611878), (139, 563456), (142, 551552), (248, 315808), (256, 305939), (278, 281728), (284, 275776), (496, 157904), (556, 140864), (568, 137888), (992, 78952), (1112, 70432), (1136, 68944), (1984, 39476), (2201, 35584), (2224, 35216), (2272, 34472), (3968, 19738), (4309, 18176), (4402, 17792), (4448, 17608), (4544, 17236), (7936, 9869), (8618, 9088), (8804, 8896)]