258561520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{461717}}^1$

素因数の和:461737

約数の個数: 40

約数和(自身を含む): 687036384

約数和(自身を除く): 428474864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 461717, 923434, 1846868, 2308585, 3232019, 3693736, 4617170, 6464038, 7387472, 9234340, 12928076, 16160095, 18468680, 25856152, 32320190, 36937360, 51712304, 64640380, 129280760, 258561520]

約数ペア:

[(1, 258561520), (2, 129280760), (4, 64640380), (5, 51712304), (7, 36937360), (8, 32320190), (10, 25856152), (14, 18468680), (16, 16160095), (20, 12928076), (28, 9234340), (35, 7387472), (40, 6464038), (56, 4617170), (70, 3693736), (80, 3232019), (112, 2308585), (140, 1846868), (280, 923434), (560, 461717)]