19990860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{11489}}^1$

素因数の和:11530

約数の個数: 48

約数和(自身を含む): 57909600

約数和(自身を除く): 37918740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 58, 60, 87, 116, 145, 174, 290, 348, 435, 580, 870, 1740, 11489, 22978, 34467, 45956, 57445, 68934, 114890, 137868, 172335, 229780, 333181, 344670, 666362, 689340, 999543, 1332724, 1665905, 1999086, 3331810, 3998172, 4997715, 6663620, 9995430, 19990860]

約数ペア:

[(1, 19990860), (2, 9995430), (3, 6663620), (4, 4997715), (5, 3998172), (6, 3331810), (10, 1999086), (12, 1665905), (15, 1332724), (20, 999543), (29, 689340), (30, 666362), (58, 344670), (60, 333181), (87, 229780), (116, 172335), (145, 137868), (174, 114890), (290, 68934), (348, 57445), (435, 45956), (580, 34467), (870, 22978), (1740, 11489)]