81343990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1259}}^1$

素因数の和:1357

約数の個数: 64

約数和(自身を含む): 182891520

約数和(自身を除く): 101547530

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 71, 91, 130, 142, 182, 355, 455, 497, 710, 910, 923, 994, 1259, 1846, 2485, 2518, 4615, 4970, 6295, 6461, 8813, 9230, 12590, 12922, 16367, 17626, 32305, 32734, 44065, 64610, 81835, 88130, 89389, 114569, 163670, 178778, 229138, 446945, 572845, 625723, 893890, 1145690, 1162057, 1251446, 2324114, 3128615, 5810285, 6257230, 8134399, 11620570, 16268798, 40671995, 81343990]

約数ペア:

[(1, 81343990), (2, 40671995), (5, 16268798), (7, 11620570), (10, 8134399), (13, 6257230), (14, 5810285), (26, 3128615), (35, 2324114), (65, 1251446), (70, 1162057), (71, 1145690), (91, 893890), (130, 625723), (142, 572845), (182, 446945), (355, 229138), (455, 178778), (497, 163670), (710, 114569), (910, 89389), (923, 88130), (994, 81835), (1259, 64610), (1846, 44065), (2485, 32734), (2518, 32305), (4615, 17626), (4970, 16367), (6295, 12922), (6461, 12590), (8813, 9230)]