21184975

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{7121}}^1$

素因数の和:7155

約数の個数: 24

約数和(自身を含む): 31792608

約数和(自身を除く): 10607633

約数列:

[1, 5, 7, 17, 25, 35, 85, 119, 175, 425, 595, 2975, 7121, 35605, 49847, 121057, 178025, 249235, 605285, 847399, 1246175, 3026425, 4236995, 21184975]

約数ペア:

[(1, 21184975), (5, 4236995), (7, 3026425), (17, 1246175), (25, 847399), (35, 605285), (85, 249235), (119, 178025), (175, 121057), (425, 49847), (595, 35605), (2975, 7121)]