645553664

素因数分解:

$2^9\times 7^1\times {\mathrm{281}}^1\times {\mathrm{641}}^1$

素因数の和:947

約数の個数: 80

約数和(自身を含む): 1481664096

約数和(自身を除く): 836110432

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 281, 448, 512, 562, 641, 896, 1124, 1282, 1792, 1967, 2248, 2564, 3584, 3934, 4487, 4496, 5128, 7868, 8974, 8992, 10256, 15736, 17948, 17984, 20512, 31472, 35896, 35968, 41024, 62944, 71792, 71936, 82048, 125888, 143584, 143872, 164096, 180121, 251776, 287168, 328192, 360242, 503552, 574336, 720484, 1007104, 1148672, 1260847, 1440968, 2297344, 2521694, 2881936, 5043388, 5763872, 10086776, 11527744, 20173552, 23055488, 40347104, 46110976, 80694208, 92221952, 161388416, 322776832, 645553664]

約数ペア:

[(1, 645553664), (2, 322776832), (4, 161388416), (7, 92221952), (8, 80694208), (14, 46110976), (16, 40347104), (28, 23055488), (32, 20173552), (56, 11527744), (64, 10086776), (112, 5763872), (128, 5043388), (224, 2881936), (256, 2521694), (281, 2297344), (448, 1440968), (512, 1260847), (562, 1148672), (641, 1007104), (896, 720484), (1124, 574336), (1282, 503552), (1792, 360242), (1967, 328192), (2248, 287168), (2564, 251776), (3584, 180121), (3934, 164096), (4487, 143872), (4496, 143584), (5128, 125888), (7868, 82048), (8974, 71936), (8992, 71792), (10256, 62944), (15736, 41024), (17948, 35968), (17984, 35896), (20512, 31472)]