28881664

素因数分解:

$2^8\times 7^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1$

素因数の和:321

約数の個数: 72

約数和(自身を含む): 67108608

約数和(自身を除く): 38226944

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 71, 112, 128, 142, 224, 227, 256, 284, 448, 454, 497, 568, 896, 908, 994, 1136, 1589, 1792, 1816, 1988, 2272, 3178, 3632, 3976, 4544, 6356, 7264, 7952, 9088, 12712, 14528, 15904, 16117, 18176, 25424, 29056, 31808, 32234, 50848, 58112, 63616, 64468, 101696, 112819, 127232, 128936, 203392, 225638, 257872, 406784, 451276, 515744, 902552, 1031488, 1805104, 2062976, 3610208, 4125952, 7220416, 14440832, 28881664]

約数ペア:

[(1, 28881664), (2, 14440832), (4, 7220416), (7, 4125952), (8, 3610208), (14, 2062976), (16, 1805104), (28, 1031488), (32, 902552), (56, 515744), (64, 451276), (71, 406784), (112, 257872), (128, 225638), (142, 203392), (224, 128936), (227, 127232), (256, 112819), (284, 101696), (448, 64468), (454, 63616), (497, 58112), (568, 50848), (896, 32234), (908, 31808), (994, 29056), (1136, 25424), (1589, 18176), (1792, 16117), (1816, 15904), (1988, 14528), (2272, 12712), (3178, 9088), (3632, 7952), (3976, 7264), (4544, 6356)]