21065350

素因数分解:

$2^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{5333}}^1$

素因数の和:5424

約数の個数: 24

約数和(自身を含む): 39684960

約数和(自身を除く): 18619610

約数列:

[1, 2, 5, 10, 25, 50, 79, 158, 395, 790, 1975, 3950, 5333, 10666, 26665, 53330, 133325, 266650, 421307, 842614, 2106535, 4213070, 10532675, 21065350]

約数ペア:

[(1, 21065350), (2, 10532675), (5, 4213070), (10, 2106535), (25, 842614), (50, 421307), (79, 266650), (158, 133325), (395, 53330), (790, 26665), (1975, 10666), (3950, 5333)]