131582780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{4723}}^1$

素因数の和:4938

約数の個数: 48

約数和(自身を含む): 317452800

約数和(自身を除く): 185870020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 796, 995, 1393, 1990, 2786, 3980, 4723, 5572, 6965, 9446, 13930, 18892, 23615, 27860, 33061, 47230, 66122, 94460, 132244, 165305, 330610, 661220, 939877, 1879754, 3759508, 4699385, 6579139, 9398770, 13158278, 18797540, 26316556, 32895695, 65791390, 131582780]

約数ペア:

[(1, 131582780), (2, 65791390), (4, 32895695), (5, 26316556), (7, 18797540), (10, 13158278), (14, 9398770), (20, 6579139), (28, 4699385), (35, 3759508), (70, 1879754), (140, 939877), (199, 661220), (398, 330610), (796, 165305), (995, 132244), (1393, 94460), (1990, 66122), (2786, 47230), (3980, 33061), (4723, 27860), (5572, 23615), (6965, 18892), (9446, 13930)]