15991825

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1$

素因数の和:417

約数の個数: 24

約数和(自身を含む): 21114720

約数和(自身を除く): 5122895

約数列:

[1, 5, 19, 25, 95, 131, 257, 475, 655, 1285, 2489, 3275, 4883, 6425, 12445, 24415, 33667, 62225, 122075, 168335, 639673, 841675, 3198365, 15991825]

約数ペア:

[(1, 15991825), (5, 3198365), (19, 841675), (25, 639673), (95, 168335), (131, 122075), (257, 62225), (475, 33667), (655, 24415), (1285, 12445), (2489, 6425), (3275, 4883)]