21080696

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1259}}^1$

素因数の和:1308

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 29722504

約数列:

[1, 2, 4, 7, 8, 13, 14, 23, 26, 28, 46, 52, 56, 91, 92, 104, 161, 182, 184, 299, 322, 364, 598, 644, 728, 1196, 1259, 1288, 2093, 2392, 2518, 4186, 5036, 8372, 8813, 10072, 16367, 16744, 17626, 28957, 32734, 35252, 57914, 65468, 70504, 114569, 115828, 130936, 202699, 229138, 231656, 376441, 405398, 458276, 752882, 810796, 916552, 1505764, 1621592, 2635087, 3011528, 5270174, 10540348, 21080696]

約数ペア:

[(1, 21080696), (2, 10540348), (4, 5270174), (7, 3011528), (8, 2635087), (13, 1621592), (14, 1505764), (23, 916552), (26, 810796), (28, 752882), (46, 458276), (52, 405398), (56, 376441), (91, 231656), (92, 229138), (104, 202699), (161, 130936), (182, 115828), (184, 114569), (299, 70504), (322, 65468), (364, 57914), (598, 35252), (644, 32734), (728, 28957), (1196, 17626), (1259, 16744), (1288, 16367), (2093, 10072), (2392, 8813), (2518, 8372), (4186, 5036)]