81372928

素因数分解:

$2^8\times 7^2\times {\mathrm{13}}^1\times {\mathrm{499}}^1$

素因数の和:542

約数の個数: 108

約数和(自身を含む): 203889000

約数和(自身を除く): 122516072

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 49, 52, 56, 64, 91, 98, 104, 112, 128, 182, 196, 208, 224, 256, 364, 392, 416, 448, 499, 637, 728, 784, 832, 896, 998, 1274, 1456, 1568, 1664, 1792, 1996, 2548, 2912, 3136, 3328, 3493, 3992, 5096, 5824, 6272, 6487, 6986, 7984, 10192, 11648, 12544, 12974, 13972, 15968, 20384, 23296, 24451, 25948, 27944, 31936, 40768, 45409, 48902, 51896, 55888, 63872, 81536, 90818, 97804, 103792, 111776, 127744, 163072, 181636, 195608, 207584, 223552, 317863, 363272, 391216, 415168, 447104, 635726, 726544, 782432, 830336, 894208, 1271452, 1453088, 1564864, 1660672, 2542904, 2906176, 3129728, 5085808, 5812352, 6259456, 10171616, 11624704, 20343232, 40686464, 81372928]

約数ペア:

[(1, 81372928), (2, 40686464), (4, 20343232), (7, 11624704), (8, 10171616), (13, 6259456), (14, 5812352), (16, 5085808), (26, 3129728), (28, 2906176), (32, 2542904), (49, 1660672), (52, 1564864), (56, 1453088), (64, 1271452), (91, 894208), (98, 830336), (104, 782432), (112, 726544), (128, 635726), (182, 447104), (196, 415168), (208, 391216), (224, 363272), (256, 317863), (364, 223552), (392, 207584), (416, 195608), (448, 181636), (499, 163072), (637, 127744), (728, 111776), (784, 103792), (832, 97804), (896, 90818), (998, 81536), (1274, 63872), (1456, 55888), (1568, 51896), (1664, 48902), (1792, 45409), (1996, 40768), (2548, 31936), (2912, 27944), (3136, 25948), (3328, 24451), (3493, 23296), (3992, 20384), (5096, 15968), (5824, 13972), (6272, 12974), (6487, 12544), (6986, 11648), (7984, 10192)]