1816780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{683}}^1$

素因数の和:718

約数の個数: 48

約数和(自身を含む): 4596480

約数和(自身を除く): 2779700

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 683, 1330, 1366, 2660, 2732, 3415, 4781, 6830, 9562, 12977, 13660, 19124, 23905, 25954, 47810, 51908, 64885, 90839, 95620, 129770, 181678, 259540, 363356, 454195, 908390, 1816780]

約数ペア:

[(1, 1816780), (2, 908390), (4, 454195), (5, 363356), (7, 259540), (10, 181678), (14, 129770), (19, 95620), (20, 90839), (28, 64885), (35, 51908), (38, 47810), (70, 25954), (76, 23905), (95, 19124), (133, 13660), (140, 12977), (190, 9562), (266, 6830), (380, 4781), (532, 3415), (665, 2732), (683, 2660), (1330, 1366)]