19961425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{2503}}^1$

素因数の和:2553

約数の個数: 24

約数和(自身を含む): 27944640

約数和(自身を除く): 7983215

約数列:

[1, 5, 11, 25, 29, 55, 145, 275, 319, 725, 1595, 2503, 7975, 12515, 27533, 62575, 72587, 137665, 362935, 688325, 798457, 1814675, 3992285, 19961425]

約数ペア:

[(1, 19961425), (5, 3992285), (11, 1814675), (25, 798457), (29, 688325), (55, 362935), (145, 137665), (275, 72587), (319, 62575), (725, 27533), (1595, 12515), (2503, 7975)]