15518020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{557}}^1$

素因数の和:772

約数の個数: 48

約数和(自身を含む): 37497600

約数和(自身を除く): 21979580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 557, 796, 995, 1114, 1393, 1990, 2228, 2785, 2786, 3899, 3980, 5570, 5572, 6965, 7798, 11140, 13930, 15596, 19495, 27860, 38990, 77980, 110843, 221686, 443372, 554215, 775901, 1108430, 1551802, 2216860, 3103604, 3879505, 7759010, 15518020]

約数ペア:

[(1, 15518020), (2, 7759010), (4, 3879505), (5, 3103604), (7, 2216860), (10, 1551802), (14, 1108430), (20, 775901), (28, 554215), (35, 443372), (70, 221686), (140, 110843), (199, 77980), (398, 38990), (557, 27860), (796, 19495), (995, 15596), (1114, 13930), (1393, 11140), (1990, 7798), (2228, 6965), (2785, 5572), (2786, 5570), (3899, 3980)]