15791920

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1811}}^1$

素因数の和:1933

約数の個数: 40

約数和(自身を含む): 37073520

約数和(自身を除く): 21281600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 1811, 2180, 3622, 4360, 7244, 8720, 9055, 14488, 18110, 28976, 36220, 72440, 144880, 197399, 394798, 789596, 986995, 1579192, 1973990, 3158384, 3947980, 7895960, 15791920]

約数ペア:

[(1, 15791920), (2, 7895960), (4, 3947980), (5, 3158384), (8, 1973990), (10, 1579192), (16, 986995), (20, 789596), (40, 394798), (80, 197399), (109, 144880), (218, 72440), (436, 36220), (545, 28976), (872, 18110), (1090, 14488), (1744, 9055), (1811, 8720), (2180, 7244), (3622, 4360)]