128914520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{460409}}^1$

素因数の和:460427

約数の個数: 32

約数和(自身を含む): 331495200

約数和(自身を除く): 202580680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 460409, 920818, 1841636, 2302045, 3222863, 3683272, 4604090, 6445726, 9208180, 12891452, 16114315, 18416360, 25782904, 32228630, 64457260, 128914520]

約数ペア:

[(1, 128914520), (2, 64457260), (4, 32228630), (5, 25782904), (7, 18416360), (8, 16114315), (10, 12891452), (14, 9208180), (20, 6445726), (28, 4604090), (35, 3683272), (40, 3222863), (56, 2302045), (70, 1841636), (140, 920818), (280, 460409)]