1380492440

素因数分解:

$2^3\times 5^1\times {\mathrm{787}}^1\times {\mathrm{43853}}^1$

素因数の和:44651

約数の個数: 32

約数和(自身を含む): 3110125680

約数和(自身を除く): 1729633240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 787, 1574, 3148, 3935, 6296, 7870, 15740, 31480, 43853, 87706, 175412, 219265, 350824, 438530, 877060, 1754120, 34512311, 69024622, 138049244, 172561555, 276098488, 345123110, 690246220, 1380492440]

約数ペア:

[(1, 1380492440), (2, 690246220), (4, 345123110), (5, 276098488), (8, 172561555), (10, 138049244), (20, 69024622), (40, 34512311), (787, 1754120), (1574, 877060), (3148, 438530), (3935, 350824), (6296, 219265), (7870, 175412), (15740, 87706), (31480, 43853)]