18790960

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7577}}^1$

素因数の和:7621

約数の個数: 40

約数和(自身を含む): 45104256

約数和(自身を除く): 26313296

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 7577, 15154, 30308, 37885, 60616, 75770, 121232, 151540, 234887, 303080, 469774, 606160, 939548, 1174435, 1879096, 2348870, 3758192, 4697740, 9395480, 18790960]

約数ペア:

[(1, 18790960), (2, 9395480), (4, 4697740), (5, 3758192), (8, 2348870), (10, 1879096), (16, 1174435), (20, 939548), (31, 606160), (40, 469774), (62, 303080), (80, 234887), (124, 151540), (155, 121232), (248, 75770), (310, 60616), (496, 37885), (620, 30308), (1240, 15154), (2480, 7577)]