1990491440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{3554449}}^1$

素因数の和:3554469

約数の個数: 40

約数和(自身を含む): 5289021600

約数和(自身を除く): 3298530160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 3554449, 7108898, 14217796, 17772245, 24881143, 28435592, 35544490, 49762286, 56871184, 71088980, 99524572, 124405715, 142177960, 199049144, 248811430, 284355920, 398098288, 497622860, 995245720, 1990491440]

約数ペア:

[(1, 1990491440), (2, 995245720), (4, 497622860), (5, 398098288), (7, 284355920), (8, 248811430), (10, 199049144), (14, 142177960), (16, 124405715), (20, 99524572), (28, 71088980), (35, 56871184), (40, 49762286), (56, 35544490), (70, 28435592), (80, 24881143), (112, 17772245), (140, 14217796), (280, 7108898), (560, 3554449)]